Even when you're producing difficult material and you get emotional, after it you feel good; you feel like you've done a good job, or had an emotional release. I've always enjoyed that, but you go home and think, that was a good day's work, and you move on.
The whole thing about the way I approach work is to be surprised by an opportunity when it comes up. So I have no idea what I will be doing next, and I kind of like that.
I consider myself really lucky and I always have done. My approach is that if I know I'm relaxed and happy, then I will do my best work.