Can't remember who it was, but there was a child actor who had some early
success but decided to bail on the Hollywood life and ended up attending Brown University (I think) - and no...it's not Emma Watson that I'm thinking about. I think her parents basically pulled her out of the scene and got her on a 'normal track'.
I read an article about it and she recognized how crazy young fame can be and how virtually every kid actor that experiences it ends up with serious issues at some point. Life is hard enough without the extra 'baggage' of the things they're exposed to at such a young age.