I was reading William Shawcross's biography of the Queen Mother, dressed in my witch outfit! And you know what? It was a really good mix; it was a therapeutic mix.

It was weird because I was pregnant, throughout that so it was weird being a pregnant witch. I was in a really bad mood but luckily, because I sleep with the director, he just sort of scheduled me so I only had to do it two nights.

I was weird right from the start. It's just that you can't ever expect people to get you. And I do think that really did mess with my head, being well-known young, when you really don't know who you are.

Very early on, you figure out that you put your self-esteem in the hands of strangers. There's a different commodity. There's the Helena Bonham Carter that everyone thinks they know, who really has nothing to do with me. But you just have to let that go.

But it's often been the case, I've done so many countless small, independent films that really 3.2 people have seen, so you never know. You do it for the joy of the part and not necessarily expect anyone to see the final product.

I'm a very good sleeper.