One thing I do when I go to the casino is I play like I already lost the money. Now I'm not saying play reckless or like you have to make a come back. I'm just saying if you accept that you can lose then you are less likely to play with emotion. You have to check that at the door. The worst thing you can do in person is go on tilt. People will pick up on it at any level and take you down chip by chip letting you make the mistakes for them. Don't try and get to fancy with trapping or anything like that. Just play every hand straight up. You hit a pair on the flop, bet. Don't give them a chance to get free cards. You will lose sometimes but if they get lucky they get lucky, nothing you can do. Pot control is huge.