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My mind is always going. I'm always thinking what I need to do, what I haven't done, what I did do, what I didn't do as well as I could - I'm relentless that way with myself.

"Billy Crystal, Up Since 1948". Interview with Scott Simon, www.npr.org. September 8, 2013.
My mind is always going. I'm always thinking what I need to do, what I haven't done, what I did do, what I didn't do as well as I could - I'm relentless that way with myself.