The instructors take the stress of combat and try to put it in a training environment. Because it’s not actual combat, just training, people can more easily see that the stress is in their head, self-induced. But that’s entry level: Ultimately, SEAL commanders are trying to find the people who can realize that all stress is self-induced. Even when bombs are going off and people are trying to kill you. Worrying doesn’t help keep you alive. In fact, it can get you killed.
