Why?

Why is it so hard to stick to healthy eating? I know that dieting is wrong and that just simply cutting back and moving more is the way to go but for some reason it is so easy to get stressed out and head straight for those cookies or chips. I wish I had another vice like reading too much LOL or excercising to much. That would be awesome. Oh to have a food vice, how much does it suck? Way to much. Doesn't smell as bad as cigarette smoke but it still hurts your body in a negative way.