Actors live dependent on being validated by other people's opinions. I don't understand what it is I do that people want. I don't know what an actor does. I have no credentials. I don't know what I'm doing.
And if you're a golfer and you watch a golf film and Matt Damon swing, and it's not great, then you're not going to believe in the golf story, you're not going to believe in the rest of the film. That's the whole movie, so if that swing looks like crap, the movie's crap.
I didn't know my dad for a long time. My dad was on drugs and my dad was at the VA Hospital, my dad was off in his own world selling drugs or using them or there would be crack heads in the house or whatever it would be.
I don't even really know what it is I do for a living - the level of insecurity is very, very high. You're making a lot of money, getting a lot of accolades and positive criticism for something where you don't even know what you're doing.