I think I have an addiction?

I am not in the overweight range...YET.I cant stop eating, literally. I eat whenever I am upset, bored, or angry. Yesterday, I ate an entire jar of cookies (about 27) and still felt empty. I'm so ashamed of myself, but I feel such a strong urge to munch down on something and swallow. I crave only sweet foods. counseling is out of the question, but is there something I can do to help myself? Please be realistic and don't be crule.