A myth about self-defense training is that your fear goes away.
I think a truer statement is that you learn to better understand your fears. They don't go anywhere. However, through self-examination, we may gain a good knowledge of our abilities under duress. Confidence is created this way, by knowing you can respond in a situation of fear, rather than being surprised when the nerves kick in.
To become fearless would be to lose one's humanity.
Journeyman talks about this a lot. He always factors in the psychological/physiological aspects to his methods, knowing that fine motor skills will be lost under stress, and an attackers injuries and/or rationality may be dulled by substances or adrenalin. He knows this because he has seen it happen. It is his job to study it.
Because in our training we constantly examine fear--and replicate it as much as is possible--we translate these lessons into our daily existence. Our actions, I believe, are less determined by avoidance of fear, as we accept its presence in the world. Instead we look for effective solutions (even if this require heaps of patience). We analyze why we may be fearful in the first place; and we hesitate to give our power and minds away to others.
These skills make a warrior of life itself. A humble, swift-acting, human being.
Not a fearless, thoughtless thug.