The core format is a one-on-one interview: Elizabeth Day sits with a single guest for 25 to 60 minutes and works through a fixed structure of three named failures, using each as a way into the guest's biography. Guests skew toward UK celebrity and media figures — pop stars like Natasha Hamilton, reality-TV personalities like Sophie Habboo, entrepreneurs like Emma Grede, and film/creative figures like Baz Luhrmann and Luke Evans — though international guests appear as well. Recurring subject matter includes mental health and therapy (ADHD diagnoses, postnatal depression, CBT), relationship patterns like people-pleasing and difficulty with boundaries, blended families and co-parenting, career ambition and entrepreneurial setbacks, and the mechanics of creative work. Some episodes depart from the standard one-guest format: 'ON FINDING LOVE AT ANY AGE' and 'ON FINDING THE ONE' compile multiple guests (Luke Evans, Dolly Alderton, Miranda Hart, Celeste Barber, Glennon Doyle) around a shared theme rather than a single interview. The show has also spun off History's Greatest Fails, co-hosted with historian and broadcaster Dan Jones, which uses the same failure lens on historical figures such as Richard III. Elizabeth Day frequently connects a guest's story back to her own biography and previously stated philosophy that failure is not defined by outcome. Episodes are conversational and narrative rather than tightly scripted, with the host allowing extended personal disclosure on topics like self-harm ideation, tabloid scrutiny, and estrangement. Listeners who follow celebrity culture, memoir-style interviews, or personal-development framing of setbacks are the core audience. Production is guest-driven audio interview with occasional panel and crossover-series episodes rather than narrated documentary or scripted segments.