I did study the art of being a barber because I wanted to figure out what my routine would be. Do you start in the front or back? Top or bottom? Swivel the chair or walk around? What I did discover is there's no such thing as the perfect haircut!
When you're doing a play you get to go full speed ahead, all night, in front of an audience. It's a roller-coaster ride, responding to other actors, it feeds you.
I'm always playing the nice guy in most of the projects that I do.