Overcoming fear of death
You cannot be even a good soldier until you’ve reached to a certain state of development where it makes no difference whether you live or die.
This was always a part of the training of the samurai: That before he could really learn to use the sword under a skillful master, he had to get to a point where he wasn’t constantly anxious to defend himself.
Because that puts his body into a certain type of tension which rendered him incompetent. He had totally to overcome the fear of death — that was the first requisite.
And you can overcome the fear of death only by realizing that it is completely inevitable — that everybody were as good as dead… under sentence of death, only that you don’t know when it is going to happen.
When you accept death… you become, suddenly, charged with life.