You go through your 20s sort of like a chrysalis in many ways, stretching into your own skin and trying to bust out of a cocoon.

It can take a long time for some people to find out how to ground themselves, and film sets are an odd atmosphere to do it in - especially if, like me, you finished school early.

I didn't use a phone until I was 14.

That's a funny thing, fame. People definitely do treat you differently. When you begin to be successful, people say, 'Don't go changing.' Well, that's easy to say, but the fact is, you don't change at all -- other people do.

As a kid, I spent an awful lot of time pretending I was somebody else. I think growing up in the 1980s wasn't very exciting so you kind of create this secret life of an alternate person. You pretend to be whatever you need to be that day, so you live in that dream world.

I can be intolerably jealous and I think that’s what’s driven me. My ambition knows no end.

Even though I've had the body of work I've had, and the success I've had, I do not rest on my laurels whatsoever.