People don't get fat by accident. (Well, maybe if they fall into a vat of peanut butter and have to eat themselves out *g*) There's a reason we eat too much and/or the wrong things and/or don't exercise enough - a reason we don't look after ourselves properly.

By looking at how you feel, and perhaps looking back at what happened before you put on the weight, or when you learned the habits that encouraged your weight gain, you can see what's going on. Like all our habits, healthy or otherwise, they serve a function for us. If you strip away those habits, you're bound to feel the feelings you were using them to avoid. You need to put new, healthy strategies in their place - finding healthy ways to protect yourself and build your self-esteem - to replace them.