Maybe it's a little ambitious of me to presume that no matter how big the film is, that I can always go down to the shop to buy a pint of milk.

There's always a certain pride in getting the job done properly.

The problem with prime beef is that there are so many people out there selling offal. So you don't know when you're going eat a shitty gangster movie. Because everybody knows there's good stuff to be involved in.

I'm here to challenge myself and to see whether I can shape-shift in an environment that's actually quite daunting, but which I think would be nice to shine a light into. The destination of any interesting drama is that you shine a light into a place that not many people know about.

David Mamet we all know is a great screenplay writer and playwright and a great director. If you like him, you like him. If you hate him, you really hate him. He's someone who's into controversy, you know what I mean? That's David Mamet.

I'd learned how to lie and manipulate from an early age so a combination of that, desperation, having to have my own fridge and my umbilical cord back... I had to go out into the world. Then some angel somewhere said: "Have you considered going to drama school?" And this sounded like the solution to all of my problems.

Then there's your diet. You cut out sugars, fat, soy sauces... anything that's nice. Tea and coffee is replaced by boiling water with lemon. It's amazing how quickly you get into it. There's also herbal tea and a lot of water, obviously... about two litres a day.