This caught my eye in an article about Paul Newman and his work in "Cars" on Yahoo News called At 81, Paul Newman stars in animated movie. I think it applies to any art, except for maybe the part about the film set.
Later in an isolated hallway, he [Newman] gave some advice to aspiring actors: "Study your craft and know who you are and what's special about you. Find out what everyone does on a film set, ask questions and listen. Make sure you live life, which means don't do things where you court celebrity, and give something positive back to our society."
As for his credo on how to live life, Newman says, "It's useless to put on the brakes when you're upside down!"