Nobody taught Picasso how to paint - he learned for himself. And nobody can teach you to be a producer. You can learn the mechanics, but you can't learn what's right about a script or a director or an actor. That comes from instinct and intuition. It comes from inside you.
Have you ever observed that we pay much more attention to a wise passage when it is quoted than when we read it in the original author?
All I do, really, is go to work and try to be professional, be on time and be prepared.