Extreme Ownership does what many books do. It takes common sense principles and tries to bring them to life through narrative. The handoff between narrative and principle was not convincing and with the exception of the first pillar, the book was not exceptionally impactful. It's made more interesting with it's descriptions of battle but the quality of writing made it hard for me to read. Too many superlatives and oorahs. The chapter for which the book is named is terrific and thought provoking however. I would have preferred to read an essay on extreme ownership and read the rest as a wartime memoir.