David Guterson

Time made me change. I gradually woke up to the realization that this is who I am, an author, a public figure, and I couldn't just hide in my study, tapping away at the keyboard and pretend that I didn't have a role to play beyond stringing words together.

Sometimes it's even hard to tell the difference between a tic and a compulsion. But while tics stem from an urge in a specific part of the body - either completely unconsciously or through a premonitory sensation that's satisfied only by the tic - OCD bubbles up as conscious thoughts in the mind.