There is the story in every man's heart of human progress. I believe every one of us knows that his major job on Earth is to make some contributions, no matter how small, to this inexorable movement of human progress.
When I was very young, I tried selling used cars. It didn't last long. I guess that was my good luck too, that I didn't show more promise at it, or I might have been an automobile dealer.
My luck was my father not striking oil... we'd have been rich. I'd never have set out for Hollywood with my camera, and I'd have had a lot less interesting life.