The exuberant king of survival TV insists that our wild adventures are about more than just chasing fun—they can help get us through the struggles of our everyday lives. And that’s the undercurrent of his new book, Mind Fuel: Simple Ways to Build Mental Resilience Every Day, which contains a year’s worth of daily, bite-size prompts to explore our relationship to things like joy, trust, and courage. Sound corny? It might. But this is no puffy celebrity self-help tome: informed by input from psychiatrists and psychologists, Mind Fuel offers a very approachable practice to better mental health. In this episode, Grylls talks about his own battles with confidence and self-doubt, and the healing and restorative energy he’s always found in nature.