You built the life you were supposed to want. So why doesn't it feel like enough? Passion Struck is the #1 Health and Fitness podcast — and it exists to answer exactly that question. I'm John R. Miles — Navy veteran, former Fortune 50 executive, bestselling author — and I built this show because I lived the "successful but empty" version of life myself, and I wanted to find a better way. Each week, I sit down with the world's top voices in neuroscience, psychology, medicine, and elite performance — including Angela Duckworth, Susan Cain, Robert Waldinger, Daniel Amen, and Ryan Holiday — to unpack what the research tells us about purpose, connection, and resilience, and how to apply it to your own life. Fridays, I share what I'm learning directly, in solo episodes built around the same ideas. New interviews every Tuesday and Thursday. Solo episodes every Friday.
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You Don't Need More Freedom. You Need Better Constraints | David Epstein - EP 818
Épisode 819
jeudi 10 septembre 2026 • Durée 01:00:23
Have you ever felt like you need more options, more time, more freedom, or a bigger opportunity before you can finally make progress?
What if the opposite is true?
Today, John R. Miles sits down with New York Times bestselling author David Epstein, author of Range and The Sports Gene, to explore why constraints can sometimes unlock the creativity and focus that unlimited freedom cannot.
David's new book, "Inside the Box," challenges one of our most deeply held assumptions: that more freedom is always better.
Sometimes, having too many possibilities makes it harder to decide what matters, where to focus, and what to do next. David explains how constraints can channel us into productive experimentation—and why some of the biggest breakthroughs begin with a much smaller problem than we expect.
He shares the surprising reality behind the Mendeleev story, revealing how a simple textbook problem helped lead to the periodic table. He also explains what the failure of General Magic can teach us about innovation, why UPS discovered that its routing problem was really a change-management problem, and how Pixar uses constraints and small experiments to improve its biggest creative projects.
John and David also dive into one of the biggest challenges of modern life: protecting our attention.
David shares how research by Gloria Mark changed the way he works, why constant task switching can increase stress, and how he now structures his day around monotasking, batching, and deliberately protecting his attention.
In this episode, you'll learn:
Why more freedom and more options aren't always better
How constraints can actually increase creativity and innovation
The surprising truth behind the Mendeleev and periodic table story
Why many breakthroughs begin with a much smaller problem
What the failure of General Magic teaches us about innovation
Why defining the right problem may matter more than finding the perfect solution
How UPS turned a technology problem into a learning and change-management problem
Why people need to understand change before they will trust it
How to protect your attention in a world designed to fragment it
Why multitasking may be damaging your ability to think deeply
How to identify the bottleneck that's actually slowing your progress
The bigger lesson is one David returns to throughout the conversation: Sometimes the answer isn't to escape the box. It's to look more closely at what's inside it. Because the problem right in front of you may not be the obstacle to your next chapter.
Support the Movement: https://startmattering.com/. Every human deserves to feel seen, valued, and like they matter. Wear it. Live it. Show it.
Passion Struck — #1 Alternative Health Podcast. 85M+ downloads.
Disclaimer
The Passion Struck podcast is for educational and entertainment purposes only. The views and opinions expressed do not necessarily reflect those of Passion Struck or its affiliates. This podcast is not a substitute for professional medical or psychological advice.
Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.
World’s Most Influential Psychologist: The Hidden Force That Drives Human Progress | Dr. Martin Seligman – EP 817
Épisode 818
mardi 8 septembre 2026 • Durée 01:01:34
Have you ever reached a point where you stopped believing that what you do could actually make a difference?
Maybe you tried harder. Maybe you kept showing up. But after enough setbacks, rejection, or disappointment, something inside you started asking, "Why bother?"
Today, John R. Miles sits down with Dr. Martin Seligman, one of the most influential psychologists of our time and a pioneer of positive psychology.
For more than six decades, Seligman has studied learned helplessness, optimism, resilience, and human flourishing. His new book, Agency: The Psychological History of Human Progress, brings that work to a much bigger question: What makes individuals—and entire civilizations—believe they can shape the future?
Seligman explains that agency is built from three capacities: efficacy, optimism, and imagination. Together, they give us the ability not only to believe that we can act but also to envision a future worth acting toward. But this conversation goes far beyond individual psychology.
John and Marty explore what happens when agency becomes collective, why societies need to balance “I can” with “we can,” and how mattering and agency may be connected. Marty argues that our actions begin shaping our sense of self through the responses we receive from other people and the world around us. When our actions repeatedly produce no response, learned helplessness can take hold.
They also take the conversation into the future of AI, education, creativity, and human possibility. Seligman describes how AI is already allowing him to test ideas that once would have taken years to investigate—and why he believes the technology could become an extraordinary amplifier of human agency.
In this episode, you’ll learn:
Why Seligman believes agency—not just happiness—is central to human flourishing
How learned helplessness became the foundation for his lifelong study of human agency
The three psychological capacities that make up agency: efficacy, optimism, and imagination
Why some people stop acting when their efforts repeatedly fail to produce a response
You Are Not the Only Variable: When to Change Yourself and When to Change Your Environment | John R. Miles - EP 816
Épisode 817
vendredi 4 septembre 2026 • Durée 23:27
Have you ever worked harder and harder at something, only to wonder why nothing seems to change?
You may assume the answer is that you need more discipline, more motivation, or more grit. But what if the problem isn't you?
Today, John R. Miles explores that question through two very different lenses: Angela Duckworth's research on how situations shape our behavior and Jared Diamond's work on when individual leaders actually make a difference.
John also puts both ideas to the test in his own life after spending two weeks in Blue Ridge, Georgia, where he discovered that he felt calmer, clearer, and more patient—not because he had become a different person, but because he was no longer in the same environment.
But there's another side to this.
Sometimes the environment really is the problem. And sometimes you are the person the moment requires.
Jared Diamond's "Hamlet Test" asks whether someone else could have produced the same outcome. His comparison between Harry Truman and William Shakespeare reveals the difference between being replaceable and being uniquely suited to a moment.
John brings both ideas together into the Fit Check: two questions that can help you figure out whether you need to change yourself, change your environment, or simply stop avoiding the work that only you can do.
In this episode, you'll learn:
Why trying harder isn't always the answer
How your environment can bring out completely different versions of you
Why grit and willpower are sometimes not enough
How to tell the difference between a bad day and a bad environment
Jared Diamond's "Hamlet Test" for determining when someone truly matters
Why some people are replaceable in one situation but indispensable in another
How to recognize the moments when the outcome genuinely depends on you
The two questions in John's Fit Check
How to stop wasting energy trying to win in environments that work against you
World-Renowned Historian: When Leaders Actually Change History | Jared Diamond - EP 815
Épisode 816
jeudi 3 septembre 2026 • Durée 01:11:03
What makes someone a great leader?
Is it talent? Timing? Character? Circumstance? Or simply being the right person in the right place at the right moment?
After spending decades studying civilizations, geography, human societies, and why nations succeed or collapse, Diamond has turned his attention to leadership.
And his answer challenges the way we usually think about great leaders. Some leaders genuinely change history. Others recognize an opportunity that history has already created. And some may be talented, successful, and famous—but would not have made much difference if someone else had been in their place.
In this conversation, Jared explains how he uses history as a series of “natural experiments” to separate the impact of a leader from the circumstances surrounding them.
You’ll learn:
When leaders actually matter
Why some leaders are uniquely qualified to change history—and most aren't
How timing and circumstance can determine whether a leader succeeds
The difference between creating an opportunity and recognizing one
Why Churchill was a great wartime leader but far less effective in peacetime
What Harry Truman can teach us about leadership and courage
Why founders can have an outsized impact on the institutions they leave behind
How the “Hamlet test” reveals whether someone was truly indispensable
What Bill Gates, Steve Jobs, Jeff Bezos, and John Wooden reveal about distinctive leadership
Why leaders should be judged partly by what happens after they leave
Why leadership is about more than techniques—and why philosophy matters
And Jared shares one of his most important lessons for leaders:
World-Leading Psychologist: How to Change Your Life by Changing What’s Around You | Angela Duckworth - EP 814
Épisode 815
mardi 1 septembre 2026 • Durée 54:22
If you’ve been trying to change your life but keep falling back into the same habits, this episode is for you.
Today, John R. Miles sits down with Angela Duckworth, one of the world’s leading psychologists and the bestselling author of Grit. Angela has spent her career studying why some people are able to achieve their goals and reach their potential. But in her new book, Situated, she shares a powerful idea that changes the way we think about personal growth.
We tend to believe that change comes from within. We tell ourselves to be more disciplined. Try harder. Find more motivation. Have more willpower.
But Angela explains that we often overlook something incredibly important: what’s around us. The people we spend time with. The spaces where we live and work. The mentors we learn from. And the culture that surrounds us. All of these things are shaping our behavior more than we realize.
The good news is that you don't always have to force yourself to change through sheer willpower. Sometimes, changing your situation can make it easier to become the person you want to be. Angela shares her research-backed framework for understanding the four parts of your environment that can shape your life: your space, your peers, your mentors, and your culture.
In this episode, you’ll learn:
Why changing what’s around you can help you change your life
Why grit and willpower alone are not enough
How the people around you shape your behavior and goals
How to create an environment that makes better choices easier
Why the right peers and mentors can change what you believe is possible
How workplace and social culture influence who you become
The four parts of your situation you can intentionally change
How to make your environment an ally instead of an obstacle
This episode is about taking a different approach to change. Because sometimes the answer isn’t to ask yourself to try harder.
How to Stop Feeling Like You’re Never Doing Enough | Caleb Campbell - EP 813
Épisode 814
vendredi 28 août 2026 • Durée 01:08:02
If you constantly feel like you should be doing more, achieving more, or becoming more, this episode is for you.
Today, John R. Miles sits down with Caleb Campbell, a former NFL player and author of the new book Unstriving. For much of his life, Caleb believed that success would finally make him feel like he was enough. But after spending years pursuing achievement and reaching goals he once dreamed about, he discovered something many high achievers eventually learn:
You can get what you wanted and still feel like you're not enough.
Today, Caleb is sharing a different way to think about ambition, success, and the pressure so many of us feel to constantly prove ourselves.
His message is not about giving up on your goals or becoming less ambitious. It's about learning how to pursue the things that matter to you without making your worth dependent on whether you achieve them.
You can use this advice for anything: Your career. Your goals. Your relationships. The pressure you put on yourself. The next accomplishment you're chasing.
The part of your life where you keep thinking, “Once I get there, then I'll finally feel like enough.”
In this episode, you'll learn:
Why success and achievement can never permanently make you feel like enough
The difference between healthy ambition and constantly striving for approval
Why reaching a major goal can sometimes leave you feeling empty
How to stop tying your identity to your performance
What Caleb learned from pursuing his dream of playing in the NFL
How to pursue big goals without losing yourself in the process
Why you don't need to stop being ambitious to stop striving
This is an episode for anyone who has ever felt exhausted by the pressure to constantly do more, be more, or prove more.
By the end, you'll have a different way to think about success—and a clearer understanding of what it means to pursue your potential without making achievement responsible for proving that you matter.
30 Years of Research Reveals Why Midlife Isn’t a Crisis | Margie Lachman - EP 812
Épisode 813
jeudi 27 août 2026 • Durée 56:50
What if everything you’ve been told about midlife is wrong?
If you’ve ever worried that your best years are behind you, that it’s too late to change, or that getting older automatically means losing your energy, purpose, or sense of possibility, this episode is for you. Today, John R. Miles sits down with Dr. Margie Lachman, a leading lifespan psychologist and author of Primetime: A New Vision for Midlife, who has spent more than 30 years studying what actually happens to us during the middle years of life.
Margie reveals why the idea of a “midlife crisis” is largely a myth—and why midlife can actually be one of the most powerful periods of growth, confidence, purpose, and control. She explains why you are not locked into who you are, why the choices you make in midlife can shape how well you age, and how your relationships, health, and sense of purpose can influence the decades ahead.
In this episode, you’ll learn:
Why midlife isn't the crisis we've been led to believe it is
Why your personality and sense of control can continue to change
Why it’s never too late to make meaningful changes
How your choices in midlife can affect your health later in life
Why purpose and contribution become so important as we age
How giving and receiving support affects your well-being
Why staying connected can protect against loneliness and isolation
What “generativity” means and why it matters
How to think differently about the second half of your life
This is an episode about challenging the story you've been told about aging—and realizing that you may have far more time, possibility, and influence over your future than you think.
Your best years may not be behind you. They may be ahead of you.
Duke Behavioral Economist: Why You’ll Regret the Risks You Don’t Take | Dan Ariely - EP 811
Épisode 812
mardi 25 août 2026 • Durée 53:06
What if the thing you regret most someday isn't what you did—but what you never tried?
In this episode of Passion Struck, John R. Miles sits down with behavioral economist and bestselling author Dan Ariely to explore why we make decisions that don't always serve our long-term well-being.
Dan's research reveals a surprising pattern: in the moment, we tend to regret the risks we take. But when we look back over our lives, we often regret the risks we didn't take.
The conversation goes far beyond risk.
John and Dan explore why vulnerability is one of the biggest areas where people play it safe, how bureaucracy can drain passion from work, why companies struggle to measure the things that matter most, and what we may lose when we optimize everything for efficiency.
They also discuss:
Why we often choose short-term safety over long-term fulfillment
The difference between regretting action and regretting inaction
Why romantic relationships are one of the biggest areas where people avoid risk
How bureaucracy can quietly kill motivation and passion
Why companies measure productivity but struggle to measure care, connection, and meaning
What happens when organizations treat people like functions instead of human beings
Why AI's pursuit of efficiency could come at the expense of meaning and human development
How feeling appreciated can influence motivation and performance
Why investing in human capital should be treated differently than simply treating people as a cost
The question you should ask yourself: Where in your life are you playing it safer than you really want to?
Dan's larger message is difficult to ignore: the life we build isn't shaped only by the choices we make. It's also shaped by the chances we decide not to take.
How to Stop Caring What Everyone Thinks of You & Find Yourself Again | Josh Duhamel - EP 810
Épisode 811
vendredi 21 août 2026 • Durée 51:19
What would change if you stopped worrying so much about what everyone else thinks of you?
Actor, entrepreneur, and father Josh Duhamel has spent decades in the spotlight, but he says one of the biggest things he has learned with age is that he no longer needs to pretend for anyone—and that caring too much about other people's opinions once kept him from living his “full version” of himself.
In this deeply personal conversation, John R. Miles sits down with the actor, entrepreneur, and father to talk about identity, success, fatherhood, presence, and what it means to build a life that actually feels like your own.
Josh opens up about:
Why success doesn't automatically make you feel like you've done enough
How the need for validation can keep you chasing the next achievement
What helped him stop caring so much about other people's opinions
Why his cabin in Minnesota brings out a different version of himself
How changing his environment helped him become more present
Why fatherhood completely changed his definition of success
What he hopes his children remember about him
Why family memories now matter more to him than material success
How he's learning to embrace simplicity, curiosity, and being present
One of the most revealing moments comes when Josh talks about what success means to him now. Despite everything he has accomplished, he admits that he still feels like he has more to prove and achieve.
How to Change Your Brain's Destiny Before It's Too Late | Dr. David Perlmutter – EP 809
Épisode 810
jeudi 20 août 2026 • Durée 01:01:04
What if protecting your brain from cognitive decline starts decades before you ever notice a problem?
In this powerful conversation, John R. Miles sits down with neurologist and bestselling author Dr. David Perlmutter to explore the emerging science behind his new book, Brain Defenders, and why the brain’s immune system may hold one of the most important keys to long-term brain health.
David explains how specialized immune cells called microglia can either support the brain or become destructive when challenged by inflammation, metabolic dysfunction, poor sleep, and other environmental factors.
The hopeful part is that many of the factors influencing this process are within our control.
You’ll learn:
Why the brain’s immune system may be central to Alzheimer’s, Parkinson’s, PTSD, and other brain disorders
What microglial cells do and why their metabolism matters
How poor sleep can affect inflammation after just one night
Why exercise, metabolism, diet, and relationships all influence brain health
The surprising connection between oral health and the brain
Why traumatic brain injury and PTSD can share common biological pathways
How alcohol, ultra-processed foods, and a sedentary lifestyle can affect the brain
Why brain health should be addressed decades before cognitive decline appears
What David thinks about supplements, vitamin D, B vitamins, and personalized testing
What the emerging research on GLP-1 medications could mean for neurodegenerative disease
Why David believes we are the architects of our brain’s destiny
David also explains why he believes the conversation around Alzheimer’s needs to shift from simply treating disease after it appears to understanding and addressing the factors that may influence brain health much earlier in life.
His message is ultimately one of agency: the choices you make today are helping shape the brain you will have tomorrow.
How agency and mattering may reinforce one another
Why the future may depend on balancing “I can” with “we can”
What ancient civilizations can teach us about the psychology of human progress
How AI is changing the way Seligman conducts research and thinks about creativity
Why education may need to shift from teaching children to be “smart” toward character, leadership, kindness, cooperation, and flourishing
What Seligman hopes his grandchildren—and future generations—will believe about human possibility
This is ultimately a conversation about one of the most important questions we can ask ourselves: Do I believe that what I do can make a difference?
Because agency doesn't mean believing you control everything. It means believing that your actions still matter.
Support the Movement: https://startmattering.com/. Every human deserves to feel seen, valued, and like they matter. Wear it. Live it. Show it.
Passion Struck — #1 Alternative Health Podcast. 85M+ downloads.
Disclaimer
The Passion Struck podcast is for educational and entertainment purposes only. The views and opinions expressed do not necessarily reflect those of Passion Struck or its affiliates. This podcast is not a substitute for professional medical or psychological advice.
Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.
How to identify the moments that deserve your full attention
The goal isn't to become someone who can thrive anywhere.
It's to become wise enough to know which rooms you need to change—and which moments are yours to own.
Support the Movement: https://startmattering.com/. Every human deserves to feel seen, valued, and like they matter. Wear it. Live it. Show it.
Passion Struck — #1 Alternative Health Podcast. 85M+ downloads.
Disclaimer
The Passion Struck podcast is for educational and entertainment purposes only. The views and opinions expressed do not necessarily reflect those of Passion Struck or its affiliates. This podcast is not a substitute for professional medical or psychological advice.
Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.
Stop looking for the one most important thing.
Great leadership, he argues, is about getting the many important things right. This is a conversation about leadership, history, circumstance, and legacy—but ultimately, it raises a question every leader should ask: If you disappeared tomorrow, what would actually be different because you were here?
Support the Movement: https://startmattering.com/. Every human deserves to feel seen, valued, and like they matter. Wear it. Live it. Show it.
Passion Struck — #1 Alternative Health Podcast. 85M+ downloads.
Disclaimer
The Passion Struck podcast is for educational and entertainment purposes only. The views and opinions expressed do not necessarily reflect those of Passion Struck or its affiliates. This podcast is not a substitute for professional medical or psychological advice.
Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.
Sometimes, you need to look around and ask: What in my life is making it harder to become who I want to be?
Support the Movement: https://startmattering.com/. Every human deserves to feel seen, valued, and like they matter. Wear it. Live it. Show it.
Passion Struck — #1 Alternative Health Podcast. 85M+ downloads.
Disclaimer
The Passion Struck podcast is for educational and entertainment purposes only. The views and opinions expressed do not necessarily reflect those of Passion Struck or its affiliates. This podcast is not a substitute for professional medical or psychological advice.
Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.
Support the Movement: https://startmattering.com/. Every human deserves to feel seen, valued, and like they matter. Wear it. Live it. Show it.
Passion Struck — #1 Alternative Health Podcast. 85M+ downloads.
Disclaimer
The Passion Struck podcast is for educational and entertainment purposes only. The views and opinions expressed do not necessarily reflect those of Passion Struck or its affiliates. This podcast is not a substitute for professional medical or psychological advice.
Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.
Support the Movement: https://startmattering.com/. Every human deserves to feel seen, valued, and like they matter. Wear it. Live it. Show it.
Passion Struck — #1 Alternative Health Podcast. 85M+ downloads.
Disclaimer
The Passion Struck podcast is for educational and entertainment purposes only. The views and opinions expressed do not necessarily reflect those of Passion Struck or its affiliates. This podcast is not a substitute for professional medical or psychological advice.
Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.
Support the Movement: https://startmattering.com/. Every human deserves to feel seen, valued, and like they matter. Wear it. Live it. Show it.
Passion Struck — #1 Alternative Health Podcast. 85M+ downloads.
Disclaimer
The Passion Struck podcast is for educational and entertainment purposes only. The views and opinions expressed do not necessarily reflect those of Passion Struck or its affiliates. This podcast is not a substitute for professional medical or psychological advice.
Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.
Pre-Order The Mattering Effect: https://matteringeffect.com/. Take the 90-second diagnostic to see if you're disappearing.
Explore the Show: https://passionstruck.com/starter-packs/. New to Passion Struck? Start with the best episodes curated for you.
Support the Movement: https://startmattering.com/. Every human deserves to feel seen, valued, and like they matter. Wear it. Live it. Show it.
Passion Struck — #1 Alternative Health Podcast. 85M+ downloads.
Disclaimer
The Passion Struck podcast is for educational and entertainment purposes only. The views and opinions expressed do not necessarily reflect those of Passion Struck or its affiliates. This podcast is not a substitute for professional medical or psychological advice.
Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.
Support the Movement: https://startmattering.com/. Every human deserves to feel seen, valued, and like they matter. Wear it. Live it. Show it.
Passion Struck — #1 Alternative Health Podcast. 85M+ downloads.
Disclaimer
The Passion Struck podcast is for educational and entertainment purposes only. The views and opinions expressed do not necessarily reflect those of Passion Struck or its affiliates. This podcast is not a substitute for professional medical or psychological advice.
Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.
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