Courage

It seems that we develop courage over time rather than gaining it at birth. It's more logical as we grow up and experience more. You gain courage whenever you master a fear from the past. It might take a few years but if you experience the same event over and over, you'll finally get the courage to get pass it. A few years back, getting called to the office just because I did something minor or stupid was a usual thing and at first I was scared. I didn't have the courage to say anything and so was defenseless. Eventually over time, I began to stand up for myself and my beliefs and now at the office, I'm confident. That's just an example that would be developing courage over time.