I remember watching this US marines documentary. One of the marines gives a story of how one of his mates threw himself to cover a grenade when they were in battle. The guy didn't make it. He died, but he saved his entire team. The question then was how do you get this kind of courage, how do you beat fear. From a marine perspective the answer is simple, you just have to embrace fear. Since you can't run away from it. Once you embrace it you are a soldier. I have applied this into my life and it works.