Former Navy SEAL David Goggins has spent the past two decades exploring the outer limits of human performance, both in the armed forces and as an endurance athlete with more than 60 ultras under his belt. But what makes Goggins truly unique is the hardship he faced long before he began his athletic career. A brutally abusive father. A learning disability. Depression. Even obesity—he once weighed nearly 300 pounds. Goggins found strength in putting himself through hell and relying on mental toughness to find his way through. Christopher Keyes spoke with him about his remarkable journey and the tough-love lessons in his new memoir, Can’t Hurt Me.