"Extreme Ownership: How U.S. Navy SEALs Lead and Win" is a leadership and management book written by Jocko Willink and Leif Babin, both former Navy SEALs. The book emphasizes the principle of "extreme ownership," which means taking full responsibility for one's actions and decisions in all aspects of life, especially in leadership roles. Willink and Babin draw upon their combat experiences to illustrate how these principles can be applied in various situations, both in the military and in civilian life. They argue that true leadership requires accountability, decisiveness, and a commitment to teamwork. "Extreme Ownership" offers practical insights and strategies for becoming a more effective and responsible leader.