Rationalizing fear is a good thing, but far from sufficient. Practice plays a much bigger role. In unknown situations humans act on instincts anyway, not ration

Rationalizing fear is a good thing, but far from sufficient. Practice plays a much bigger role. In unknown situations humans act on instincts anyway, not rationally. This is our nature. Thus, to overcome fear in general it's best to practice "a rational response" and inhibition of instincts in extreme situations.