Shawn Ryan served as a Navy SEAL for almost six years. He endured one of the most intense training programs known in the military world, Basic Underwater Demolition/SEAL training, or BUD/S.

Jocko Willink, a former Navy SEAL commander, host of the "Jocko Podcast," and the author of "Discipline Equals Freedom: Field Manual," believes your best chances might be to run from a fight.

Jocko Willink's story reads like an adventure novel that takes us from the serene landscapes of a small New England town into ...