Two weeks ago at the U.S. Amateur, my mom caddied, and that is kind of a different feeling, because she's your mom and you have to listen to her. It was really comfortable having my mom there, but it's also really relieving and comfortable to have someone that knows the course off their hat, really.
If I make a bogey or three putt I'm on fire inside. But it's not like you're going to play any better slamming your club or getting angry. So you might as well just keep it in. People say I'm pretty calm, but I do make mistakes and I do get angry, but I try and not show it.