David Goggins

David Goggins (born 1975) is an American ultramarathon runner, ultra-distance cyclist, triathlete, public speaker, and former United States Navy SEAL. He is the only man in history to complete elite training as a Navy SEAL, Army Ranger, and Air Force Tactical Air Controller. Goggins' life story is one of radical self-transformation, overcoming a childhood of poverty and abuse, and later battling obesity and self-doubt to become one of the world's top endurance athletes. His philosophy, centered on the 40% Rule (the idea that when your mind tells you you're done, you're only 40% done), has inspired millions.