Uncontrolled fear rots the mind and impairs the body. Navy officers have to perform in situations—an incoming missile, a sinking ship—that could cause people to become paralyzed by fear. I’d learned in boxing and in my work overseas that human beings can inoculate themselves against uncontrolled fear. When I first stepped into a boxing ring to spar, my heart rate was high, my adrenaline pumped, my muscles were tense—and I got beat up. After years of Earl’s training I could get in a ring with an appreciation of how dangerous my opponent was, and I could keep my heart rate steady, my muscles
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