I've been doing a pale imitation of Bill Murray for most of my career.

I don't parade my family out for display, which is the way it will stay. Yet I have a reputation for being cooperative with the press. That's because when I do give an interview, I'm willing to tell the truth about what I do for a living and how goofy it is sometimes - and how volatile it can also be.

As an actor I am always waiting for my luck to run out.

A story has the opportunity to enlighten us, because as we connect the extraordinary moments on film with the ordinary moments of our lives, we ask ourselves, "What am I going to do the next time I'm scared? What would it be like to say goodbye to my family for the last time?"

That's what's nice about directing a film and having it done: There's nothing more I can do about it. It's done. That's it. All I can do is let it go and hope that people are kind to it.

As a young man, even if I was going to see a play or a film by myself, I didn't feel like I was alone. There was something that was unfolding up there that brought me into it. And I recognised that. For those two hours, it made me feel like I belonged to something really good.

We are still in the position of waking up and having a choice. Do I make the world better today somehow, or do I not bother?