It's quite frightening; the business of trying to be funny is very hairy. In comedy, the potential for humiliation is huge. Trying to be funny and failing is about the most embarrassing thing you can do.

I decided to give acting a serious, committed try, and soon after, I read the script for 'Lovely and Amazing.' The story was beautiful and honest, and the characters struggled with the same insecurities many women - including me - face. I didn't think I had a chance in hell of being in the film, but I knew I had to go for it.

It's very difficult to find the time or the money for people to organize rehearsals for some movies. It staggers me how little preparation often goes into these scenes which are difficult and complicated. You think, "God, it's crazy. I've never met this person before and here I am having to work at how to do a whole performance on the set." It was great to have a few days of just talking to Michael [Caine] and Daniel [Barber] and thinking about the characters and the relationship between them before we started shooting.

There's something helpful about the fast pace of a TV set where everything has to be finished by the end of the week. You have to finish the episode; it doesn't matter how long you have to go on Friday night, but you have to get it done.

I guess secrets are part of the fabric of everybody's lives. I mean everybody's lives, and guilt is part of the fabric of everybody's lives.

In my first few years as an actor, I took one terrible TV job after another. But even as I laughed off my awful roles and made fun of myself to friends, my work made me cringe - I dreaded anyone's seeing it. I was crushed that I wasn't doing anything I was proud of.

Every time you start a new job, you're starting from the beginning again and it's terrifying. And you feel like you're going to be fired and told to go home and never to darken the doors of these people ever again.