I have no choice about whether or not I have Parkinson's. I have nothing but choices about how I react to it. In those choices, there's freedom to do a lot of things in areas that I wouldn't have otherwise found myself in.

I often say now I don't have any choice whether or not I have Parkinson's, but surrounding that non-choice is a million other choices that I can make.

So what I say about Tracy is this: Tracy's big challenge is not having a Parkinson's patient for a husband. It's having me for a husband. I happen to be a Parkinson's patient.

The moment I understood this - that my Parkinson's was the one thing I wasn't going to change - I started looking at the things I could change, like the way research is funded.

If you asked my kids to describe me, they'd go through a whole list of words before even thinking about Parkinson's. And honestly, I don't think about it that much either. I talk about it because it's there, but it's not my totality.

You've probably read in People that I'm a nice guy - but when the doctor first told me I had Parkinson's, I wanted to kill him.