Overcoming gluttony

How do I overcome binge eating or gluttony?  I overcame it once and I believe that I can overcome it again.  I did not go under the 2000 calorie limit.  I don't feel good about overeating.  I wish that I could go back and change things.  Sadly, I don't have that kind of power.  I have to weigh myself tomorrow.  I hope that all will go well as far as not giving in to eating too much.