As always, with acting, you can't be too self-conscious. You shouldn't care about what people are thinking about you at the time because they're not caring about you, they're caring about the character.
It was great to do August Rush and have all the challenges of playing that character, especially the American accent for the first time and also playing the guitar and the conducting I had to do.
I think I've always been kept grounded. I've never been too involved with the movie business apart from just doing the film. I've never moved out to LA like a lot of people or been too drawn in by that.
Don't get too set on becoming an actor at an early age. I think that's where some people get into trouble. Acting becomes their life. I don't want that.