Extreme Ownership: How U.S. Navy SEALs Lead and Win

by Jocko Willink

How is it possible that switching a single individual—only the leader—had completely turned around the performance of an entire group? The answer: leadership is the single greatest factor in any team’s performance. Whether a team succeeds or fails is all up to the leader. The leader’s attitude sets the tone for the entire team. The leader drives performance—or doesn’t.