Curated™ for You's Key Ideas from Extreme Ownership
by Jocko Willink, Leif Babin

As the leader, it is your fault when your team members under-performed because you accepted and tolerated it. Not standing for less than excellent performance is more important than setting lofty standards.

To do so, they must know the "why" behind the mission. When each team member understands the goals and reasons for a mission, everyone benefits.

In high intensity & high pressure environments, in order to be effective, one has to prioritize the most important thing and tackle it first. Then, repeat.