The best thing is to always keep honest people around, because when you have a bunch of yes men around that know that you're making a mistake but let you go on with it, that's when it ruins your mind state as an artist.
“Experience is that marvelous thing that enable you to recognize a mistake when you make it again.”
“One thing I was thinking about the other day was you can't even conceive of the kinds of things you can do in movies today. The idea that you could draw, in a computer, dinosaurs and have them running around was totally impossible.”