Hi ,

 In order to be successful at long term weight loss it's imperative you change your relationship with food and yourself. If you equate overeating with happiness, love, comfort, reward, and stress relief, then it will be hard to maintain any weight loss that happens. Unless you find other ways to meet the underlying reasons you turn to food, it will be very easy to fall back on food to meet those needs. 

For most people, overeating fills a variety of needs. If you're a naturally compulsive and addictive type personality, if you stop using food, you will often transfer your compulsiveness into another area. The clinical term for this is transfer addiction.

Over the course of my career I have meet many people who got bariatric surgery and then began to drink, gamble, or shop too much. This is the danger of not addressing the compulsiveness itself. 

At the core of compulsion, there is often a feeling of emptiness that drives people to fill it with external things. This is often referred to as a "hole in the soul."