That about sums it up

"George came up to me on the set one day during my first 'Star Wars' and said something that I never fully understood until after we were done filming. He said, 'As an actor, you have to think of yourself as a ditch digger.'... What he was implying was that on his movie, I needed to think of myself as a ditch digger, because it wasn't the proper arena for actual creative expression. This was his thing. It was all very thought-out in his head, and I needed to show up to make his wants a reality. And so really, what he was saying to me, was: 'Don't let this experience discourage you from what acting can really be about, because that's not what this is.' I just wish I would've figured that out a little sooner."

-Hayden Christensen in the Washington Post on his experiences with director George Lucas.