"Having said that, somebody said to me one time that happiness grows in direct proportion to your acceptance and in inverse proportion to your expectations," he says. "So if you can just kind of say: 'Well, this is what I have today. Now, I didn't have a choice about this, but I have a million other choices I can make today. I can choose where I go. I can choose how I feel about where I go.' … If I make those choices well, I'm going to be a happy person."
When he first made it big, Michael says he was Michael, the actor. Then, he became Michael, the actor with Parkinson's. When he left Hollywood, he says he wondered if he would just be Michael with Parkinson's…but he's become so much more.
"I'm a dad, I'm a husband, I'm an activist, I'm a writer and I'm just a student of the world," he says. "This is one fact of my life, but it's not the totality of my life. It doesn't define me."