Until I was about 7, I thought books were just there, like trees. When I learned that people actually wrote them, I wanted to, too, because all children aspire to inhuman feats like flying. Most people grow up to realize they can't fly. Writers are people who don't grow up to realize they can't be God.
You always think, no matter how many times you fail, that the next time you will succeed. Otherwise you wouldn't keep trying.