How did you know what job you wanted when u were a kid?

everyone wants to know what what im going to cologe 4 and i have nooo idea.....i thought of advertisement and a wedding planner but neither of them really look that great to me how did you know what you wanted 2 be?|||I wanted to be a physical therapist. When I was 13 I severely injured my knee in a car accident. I started out with a horrible therapist and cried until my Dad promised not to bring me back there. We found someone else who was WONDERFUL. I was never in pain when I was there. That was when I made my decision.|||I wanted to be an actress/dancer/performer. I am currently a recreational cheerleading program coach. It doesn't pay crap but I like doing it, problem is it is a hobby. Still like acting but haven't done it in a long time, thinking of getting into nursing.