2023 was the year Diary of a CEO stopped being a business podcast with occasional therapy sessions and became a therapy podcast that occasionally talks business. Steven Bartlett spent the year pulling genuinely uncomfortable admissions out of people who don't usually give them: a Vogue editor who thought the job wasn't meant for someone like him, a mayor who won't answer honestly because an election is 467 days away, a comedian who says the quiet part about not wanting kids out loud.
We went through our full library of episode summaries and pulled the fifteen 2023 episodes that hold up best on a second listen, the ones with a specific reveal or hard number you'll still remember a month later, not just a good vibe. Sex, sleep, addiction, AI doom, and one very expensive lesson in what it costs to lose your business overnight. Here's where to start.
Davina McCall: How To Overcome ANY Trauma & Live The Life You Deserve | E210
McCall traces a childhood of believing her mother had abandoned her through heroin addiction, getting sober at 24, and the final weeks with her sister Caroline before cancer took her. The detail that lands hardest is the hypnotism session for claustrophobia that accidentally turned into regression therapy and healed a lifelong fear of abandonment she didn't know was still running her life. Anyone who has watched a parent's addiction wreck trust, or sat with someone dying, will recognize themselves here.
Read the full episode notesSadiq Khan: The Dark Side Of The Police. How Safe Are We REALLY? | E216
London's mayor talks about the Met's cultural rot after David Carrick and Sarah Everard, the death threats his staff now need psychological support to process, and being name-checked in the Christchurch shooter's manifesto. The rawest moment is Khan refusing to name where he's failed as mayor because he's 467 days from re-election and can't hand ammunition to opponents. Listen if you want a public figure caught being honest about the limits of honesty.
Read the full episode notesThe Leading Sex Expert: How To Have Great Sex EVERY Time! (And Fix Bad Sex): Tracey Cox | E247
Sex expert Tracey Cox explains why only about 20% of women climax through intercourse alone, why women get bored with sex faster than men do, and why one in four couples who barely have sex still call themselves extremely happy. The line that reframes the whole episode: the two happiest groups of people are single women and married men. Essential listening for any long-term couple wondering if their sex life is actually a problem or just misunderstood.
Read the full episode notesThe World’s No.1 Sleep Expert: The 6 Sleep Hacks You NEED! Matthew Walker
The sleep scientist lays out why insufficient sleep costs the US economy $411 billion a year and why a standard dose of caffeine can strip 15-30% of your deep sleep, the equivalent of aging your brain 40 years. He also reveals that when you diet while sleep-deprived, 60% of the weight you lose comes from muscle instead of fat. Anyone who treats sleep as the thing they sacrifice first needs this one.
Read the full episode notesChris Williamson: New Research On Why Men And Women Are No Longer Compatible!
Williamson unpacks the collapsing male friendship crisis (men reporting zero close friends rose fivefold since 1990) alongside his 'tall girl problem,' the theory that as women out-earn and out-educate men, the pool of equally accomplished partners shrinks. His 'male sedation hypothesis,' that porn, gaming and social media are quietly draining young men's drive to pursue anything, is the kind of claim you'll bring up at dinner for weeks. For anyone trying to make sense of the modern dating wreckage.
Read the full episode notesSeth Rogen Opens Up About His Self-Doubts & Struggles That Nobody Sees!
Rogen goes further than his usual press-tour charm, admitting he has enough money to never work again, that he and his wife are increasingly certain they made the right call not having kids, and detailing the roughly 15-year Alzheimer's decline of his mother-in-law that led to their charity work. The image of a 16-year-old becoming his family's breadwinner off Freaks and Geeks sticks with you. Good for anyone who assumes success cures self-doubt.
Read the full episode notesJay Shetty: 8 Rules For Perfect Love & Amazing Sex! | E217
The former monk describes a seven-day period of anxiety spent alone processing online criticism, admitting that by day three he started believing it himself. His core relationship rule, that trying to change someone means you love their potential and not them, anchors a wider argument about purpose, distance and intimacy pulled from his book 8 Rules of Love. Worth it for anyone who assumes public confidence means private certainty.
Read the full episode notesDoctor & Therapist To The Worlds Superstars: Justin Bieber, Miley Cyrus, Bella Hadid! - Daniel Amen
Psychiatrist Daniel Amen has scanned over 230,000 brains, including finding a golf-ball-sized cyst in his 9-year-old nephew's temporal lobe that was driving his violent behavior, gone after it was drained. His Couples From Hell study found that in 80% of couples who'd failed marital therapy, one or both partners actually needed a brain scan, not a counselor. A genuinely different lens on mental health for anyone who's tried therapy and felt like it missed something.
Read the full episode notesSimon Sinek: "I FEEL LONELY!" How To Deal With Loneliness! | E230
Sinek, the podcast's most frequent returning guest, opens by admitting he's lonely and calling himself 'pretty undatable' as a never-married man with ADHD diagnosed at 32. His personal rule with friends, 'no crying alone,' and the story of carrying a fallen soldier's casket home from Afghanistan that birthed Leaders Eat Last, make this one of his most personal appearances. For anyone who assumes the confident-on-stage guy has it figured out.
Read the full episode notesEditor Of Vogue (Edward Enninful OBE): How To Become No.1 In Your Industry Against All The Odds!
The first Black editor of British Vogue recounts a father who threatened to slit the throat of any gay person who entered the house, getting discovered as a model on a train at 16, and a health crisis of four detached retinas from years of overwork and sleep deprivation. He also details being blocked from entering his own Vogue building by a security guard who told the editor to use the loading bay. A story about proving diversity sells, told by someone who paid for it in his body.
Read the full episode notesTRANSFORM Your Life At Any Moment: Alcoholic Lawyer That Became "Fittest Man On The Planet"Rich Roll
The former lawyer whose first marriage ended on the honeymoon describes two separate rock bottoms, one as a young alcoholic and one as a 40-year-old corporate lawyer who couldn't climb a flight of stairs without wheezing despite once being a world-ranked swimmer. His transformation started with a seven-day juice cleanse designed to mimic detox discomfort before 16 years plant-based and an Ultraman finish. For anyone who thinks they've run out of time to change.
Read the full episode notesThe Weight Loss Scientist: You've Been LIED To About Calories, Dieting & Losing Weight: Giles Yeo
Cambridge geneticist Giles Yeo explains why calorie counting is close to fiction, using the example of raw celery (about 6 calories) versus cooked celery (about 31 calories) to show how caloric availability moves depending on how food is prepared. He also debunks the alkaline diet outright and points out that orange juice carries the same sugar concentration as Coca-Cola. The most useful myth-busting diet episode on this list.
Read the full episode notesThe Man That Makes Millionaires: How To Turn $1,000 Into $100 Million!: Alex Hormozi | E235
Hormozi describes being suicidal at his consulting job, then a payment processor freeze that took him from six gyms down to $1,000 in his in-laws' house in December 2016, before rebuilding into a $46.2 million exit. The moment his wife Leila told him she'd sleep with him under a bridge if it came to that is the emotional core beneath all the offer-stacking frameworks. For anyone building a business who needs to hear what the bottom actually looks like.
Read the full episode notesEx-Google Officer Speaks Out On The Dangers Of AI! - Mo Gawdat | E252
The former Google X chief business officer argues AI is a bigger existential threat than climate change, walking through the moment he watched a robotic arm's skill spread to every other arm within weeks and concluded machines were already sentient. His claim that ChatGPT already had a simulated IQ near Einstein's and could reach 1600 within months if scaling continued is the kind of number that's hard to shake. For anyone who wants the case for AI dread from someone who used to build the stuff.
Read the full episode notes10 Life-changing Lessons From The Longest Ever Study On Human Happiness! Dr. Robert Waldinger | E246
The director of Harvard's 85-year Study of Adult Development, which has tracked 724 families since 1938, explains why relationships, not wealth or fame, are the single strongest predictor of long-term health. His finding that loneliness is roughly as dangerous to your health as smoking half a pack a day is the one stat from this list you should actually act on. A calm, data-backed close to a list full of hard confessions.
Read the full episode notesThat's fifteen of the sharpest Diary of a CEO conversations from 2023, picked for the specific reveal you'll still be thinking about after the episode ends, not just the guest's name recognition. Browse the full episode summaries on Episode Notes for the rest of the catalog, including everything else this show has done since.