UFC Legend Dustin Poirier: I Lost My Mind. I’ll Never Let It Happen Again.
UFC legend Dustin Poirier discusses his retirement from fighting, struggles with depression and alcohol, a recent airport arrest on Father's Day, and his journey from a challenging childhood to finding purpose beyond the octagon.
Summary
Dustin Poirier opens up about his recent public intoxication arrest at an Atlanta airport on Father's Day, revealing the mental health struggles that led to the incident. He grew up in Lafayette, Louisiana, in a working-class family marked by parental violence, his father's lifelong alcoholism, and his parents' divorce. Despite early behavioral issues—fighting in school, juvenile detention at 14, drinking from age 12-13—Poirier discovered fighting as an outlet and purpose, eventually becoming a UFC champion. After retiring at 36 (July 2023), he struggled with the loss of identity and purpose that fighting had provided for 20 years. On Father's Day, while traveling for work, thoughts of his currently homeless father triggered depression that he attempted to medicate with alcohol at the airport, resulting in his arrest. Poirier acknowledges this wasn't an excuse but a manifestation of deeper issues he's now addressing through therapy. He discovered through neurological scans that he has brain abnormalities—including thinning in parts of his brain and a separated septum—likely from head trauma, though CTE cannot be diagnosed until post-mortem. He's made the decision to quit alcohol completely after recognizing his dangerous relationship with it mirrors his father's addiction. Regarding his future, Poirier notes the void fighting left cannot be filled by other pursuits and estimates only a 5% chance of returning to the UFC. He emphasizes the importance of his family, particularly his wife Joely who sacrificed her nursing education for his career, and his commitment to his Good Fight Foundation, which provides school supplies and support to Louisiana communities and international causes. Despite the airport incident damaging some professional relationships and sponsorships, he remains focused on mental health work, family, and continuing his charitable efforts.
About this episode
UFC legend Dustin Poirier reveals why he can't bring himself to watch the arrest video, the paid deals he's already lost, his vow to never drink again, and why the hardest fight of his life is happening off the mat. Dustin Poirier (“The Diamond”) is a retired UFC lightweight fighter with a 30-10 record, best known as the only man to knock out Conor McGregor in MMA. He founded The Good Fight Foundation with his wife, Jolie, in 2018 and now appears periodically as a desk analyst on UFC broadcasts. In June 2026, he was arrested for public intoxication at an Atlanta airport, after which he shared that he’s struggling with alcohol. He explains: ◼ What losing your career identity feels like, and how to rebuild when the fight is over ◼ How a childhood of poverty, detention and no father figure shaped the man he became ◼ Why elite athletes often fall apart when they retire, and what to do about it ◼ What going to therapy taught him about the pain he didn't know he was carrying ◼ The mental shift that turned losing to Conor McGregor into beating him Follow Dustin: Instagram - https://link.thediaryofaceo.com/E2OdPNk X - https://link.thediaryofaceo.com/3XxRxB YouTube - https://link.thediaryofaceo.com/3DQVB2W The Good Fight Foundation - https://link.thediaryofaceo.com/AbsZdY5 The Diary Of A CEO: ◼ Join DOAC circle here - https://doaccircle.com/ ◼ Buy The Diary Of A CEO book here - https://smarturl.it/DOACbook ◼ The 1% Diary is back - limited time only: https://bit.ly/3YFbJbt ◼ The Diary Of A CEO Conversation Cards: https://linkly.link/2hm7r ◼ Get email updates - https://bit.ly/diary-of-a-ceo-yt ◼ Follow Steven - https://g2ul0.app.link/gnGqL4IsKKb Sponsors: Wispr - Get 14 days of Wispr Flow for free at https://wisprflow.ai/steven Function Health - https://Functionhealth.com/DOAC to sign up for $365 a year. One dollar a day for your health Ketone - https://ketone.com/STEVEN for 30% off your subscription order
Key Insights
- Poirier states he has had recurring bouts with depression throughout his career, describing it as 'a cloud in my head that I just can't get out from under' that hits him hard when it comes, particularly triggered by thoughts of his homeless father.
- He reveals that fighting functioned as a form of therapy for him for 20 years, allowing him to quiet negative voices in his head through daily gym work and competitive focus, and he fears what he might sabotage himself with when that outlet is gone.
- Poirier explains his dangerous relationship with alcohol stems from his competitive nature—when he drinks, he drinks to be the best at drinking, consuming until bottles are gone, acknowledging this mirrors his father's addictive patterns.
- He discovered through brain imaging that he has abnormal changes in his brain including thinning and a separated septum, which a neurologist suspects is related to head trauma, though he cannot know if he has CTE until after death.
- Poirier claims that spontaneous decision-making—like impulsive $5,000 gambling bets or getting drunk in an airport—are behaviors he noticed post-retirement that he's uncertain whether to attribute to potential brain damage or his own nature.
- He states that nothing in post-retirement life has compared to fighting, estimating charitable work, broadcasting, and fatherhood fill only about 20% of the void that fighting left, and he struggles to find something equally consuming.
- Poirier reveals he's been waiting for months for the call that his 74-75 year old homeless father has died, receiving calls regularly from his sister with updates on his condition.
- He acknowledges that when he stopped therapy after feeling better three years ago, he abandoned the practices that helped him, only to have depression return, leading him to realize mental health maintenance is lifelong work, not a problem to be fixed.
- Poirier explains that his wife noticed signs of depression in him as far back as middle school—anxiety around crowds and parties—but he didn't consciously recognize it as depression until recent years.
- He states that the airport incident cost him not just embarrassment but significant money through lost sponsorships and canceled work gigs, including loss of one major sponsor and three-leg work trips.
- Poirier claims he made a conscious decision to completely cut alcohol from his life permanently after recognizing it 'has never benefited me, especially in times like that where I'm mentally not the best,' despite the social difficulty of being the sober one.
- He describes the experience of laying down his gloves as leaving 'a piece of myself' behind, explaining that fighting was his education and taught him how to be a man, and he would do it all again even knowing the damage.
Topics
Transcript
I've had many leading experts on this show, including Matthew Walker, and they've all said the same thing about sleep. They've said it's the biggest positive investment you can make in your own performance. You can have the best strategy in the world, but if you're consistently tired, poor decision-making will follow and eventually cause other things to fail in your life. So if you're looking to optimise your recovery, you should start looking at what you're sleeping on. Our sponsor, Helix, makes high quality mattresses tailored to your body. It doesn't matter if you run hot, sleep on your side, or need something firm. Helix has a mattress for you. And I asked them recently to send one to…
Full transcript available for MurmurCast members
Sign Up to AccessMore from The Diary Of A CEO with Steven Bartlett
Most Replayed Moment: The Mid-Year Reset - Atomic Habits Author On How To Get Back On Track
James Clear discusses how to prioritize habits and build lasting behavioral change by focusing on upstream habits, reflecting on systems, understanding that habits change with life seasons, and surrounding yourself with groups where desired behaviors are normal. He emphasizes that successful habits are tied to identity rather than willpower alone.
Anti-Aging Expert: This Reverses Gray Hair & Boosts Your Energy!
Dr. Martin Picard discusses how human beings are fundamentally energetic processes driven by mitochondrial function, explaining how energy resistance, stress, and lifestyle factors determine health, aging, and even hair color. He argues that gray hair reversal, disease prevention, and mental health can be understood through the lens of energy allocation and mitochondrial efficiency rather than genetic inevitability.
Women’s Fitness Expert: What You NEED To Know About Dieting & Exercise | Dr. Stephanie Estima
Dr. Stephanie Estima discusses why women should shift fitness focus from losing weight to gaining muscle, bone density, and strength, debunking myths about carbs, heavy lifting, and fasting while providing actionable strategies for different female archetypes and addressing gender-specific anatomical considerations.
Most Replayed Moment: Sleep Expert On The Truth About Melatonin And Magnesium
A sleep expert discusses the four macros of sleep quality (quantity, quality, regularity, and timing), debunks melatonin and magnesium supplement myths, and explains how circadian rhythms are regulated by light and behavioral consistency. The expert emphasizes that regularity in sleep schedules may be even more predictive of mortality than sleep duration itself.
Stock Market EMERGENCY: Sell Your Stocks Now, The Collapse Is Weeks Away!
Jeremy Grantham, a legendary investor who has managed up to $165 billion, argues that we're in the biggest investment bubble in history centered on AI. He discusses severe threats to civilization including declining fertility rates due to environmental toxins, extreme wealth inequality, and recommends diversifying away from US stocks into bonds, precious metals, and non-US equities to weather the coming market collapse.