Summary of Extreme Ownership: How U.S. Navy Seals Lead and Win by Jocko Willink and Leif Babin - Book Summary - Stella Penn In the book, "Extreme Ownership", Jocko Willink states that a group is only as good as their leader. A true leader cannot lead alone, rather, they require a group behind them that is focused on the goal. Also, a leader can only be considered a good leader when their team reaches their...