I once got up to a size 16, and yeah - that was considered obese for my height. I totally changed my diet (ie lifestyle). The abdominal fat is indicative of metabolic syndrome and associated with more insulin resistance and even Non-alcoholic fatty liver disease. Fructose is metabolized by our liver the same way alcohol is and does as much damage to it. That's why even children are now getting it and that can even necessitate liver transplants down the line ( see: http://abclocal.go.com/wabc/video?id=8095017 ).
There is no "magic bullet" for us but to take this very seriously and eliminate sugary, fat and processed foods, and get moving. Even 3 ten-minute walks per day can benefit us, but the more we move, the better.
Instead of just sitting and watching your favorite show, exercise throughout your show while watching it - do weights, stretching, leg lifts, squats... even step in place - it doesn't matter. What does is we are not sedentary and/or eating.
You may want to discuss with your doctor or even consult with an Integrative Medical specialist. Sometimes we have medical issues contributing to our weight issues such as thyroid, cortisol, or an inflammatory process. You may be bloated and uncomfortable even from food sensitivities. And if we don't sleep well, we can feel tired and HUNGRY from the tiredness as our body thinks we need more quick fuel to combat the fatigue. We then reach for that quick fuel which is often junky and just perpetuates our problem.
Many of us have been where you are, and many of us are still struggling. It is so hard in the world we live in, especially after we have become accustomed to (or addicted to) the normal "SAD" - "Standard American Diet."
You really should get evaluated by a doctor to start with.
And don't rule out healing any intestinal problems you may have (see http://itsnotmental.blogspot.com/2011/03/gut-brain-and-ba... ) and possibly even taking digestive enzymes, etc.
Eliminating all processed foods is difficult, but the closer we get to that ideal, the better off we may be.