I am one of the lucky ones; believe me, I haven't forgotten that.

Surviving the grind of 18-hour days and getting up at four in the morning to work out for an hour so I'd have the energy to do it again the next day. I did not know I had that discipline. I did not know I had the discipline to learn a seven-page scene in three hours to shoot that day or the next day. I didn't know that I was capable of realizing that potential.

I had been used to improvising and even in the audition I was feeling free to rearrange Aaron Sorkin words a little bit, as lovely as they were. I didn't find out until after I got the part how furious Aaron was at me for doing that. They said, "He was livid. He did everything in his power not to jump down your throat!" But I came to realise that Aaron was writing in metre and the rhythm of the language is very important.

It was tough doing 'Underneath the Lintel' in New Jersey in the wintertime, but rewarding. Those audiences were lively and interactive. On-stage was great, but off-stage was difficult.

I was doing a play out in L.A. 20-some-odd years ago called 'Goose and Tomtom' by David Rabe, and somebody saw it and the next thing I know I'm doing the table read of the film version of 'Glengarry Glen Ross' with Al Pacino and Jack Lemmon - one of the great films of our generation.

My favourite British spots are any of the beautiful parks, especially on a sunny day such as this, after a long stretch of cold, cloudy and rainy days.

I turned down a lot of things - some very lucrative - because I could afford to at that time. That didn't lead to a happy place. I was happy to spend time with my family, get to know my daughter, who was born during The West Wing.