Mindless eating problem

I still need help with the mindless eating.  I am in a manic state and I feel like eating everything in sight.  I don't know if it is mania but I feel bad about what I am doing and the mindless eating.  I am fully responsible for my actions.  I am just in need of help because I hope not to gain weight, but I have gained weight.  It all started with eating lunch; I had a homemade French bread pizza.  It as if I am out of control.  How do I maintain self-control and eat healthy at the same time?  That is the question.