Acting is probably the greatest therapy in the world. You can get a lot stuff out of you on the set so you don't have to take it home with you at night. It's the stuff between the lines the empty space between those lines which is interesting.
There are a lot of things that make up a performance a lot of technical things. It isn't always just about pulling it up from the darkest recesses of your mind or your heart. It's your experience and your observation.