Hercules:
The trick is as soon as you get hungry, run to your water bottle(1 litre or so) and dump it down before you even realize your doing it. Don't give yourself the chance to pigout.
Everyone:
I've broken it down to a simple science. If you can keep your hand from putting garbage in your mouth, your set! Thinking of it different ways sometimes helps.
And plan beforehand what you will eat. This gives you NO EXCUSE!!!
Also, I don't believe in self punishment or excercise bulimia if I ever overeat. I just tell myself next meal will be back to normal. I've talked to lots of people who punish. It does'nt work in my opinion as these people learn to 'enjoy' the punishment. I think what happens is you learn to enjoy the adrenaline rush that you get when eating. This happens because you realize they have done something bad will be punished (By excercise, scarring, burning, vomiting, bad self comments, no food after, etc...). It excites you. Then when you follow through with punishment you get excited even more (adrenaline rush.) Its like a love-hate type thing. You don't 'really' wanna torture yourself. You just do it. You've slowly programmed your mind to do it over time by itself. And its like you've created your own trap,.. you have! You feel happy you punished yourself cause it will take guilt away for a short time. But after all is over you feel like a complete failure and tell yourself "it'll never happen again." The cycle repeats. Exaustion occurs... But this is only one 'small' reason for over-eating, and there are so many reasons why... With help you can escape it. I really wish I could help somehow but theres just so much to talk about...
Let it be known that these tips are nothing compared to 'actual' help. And if you can relate to the above please get professional help. These tips are only good for a short while and its always good to solve the underlying problem...