When you lose weight, keep their weight down is a constant struggle. There are several major things that can help keep the weight off though
Diary. By having a book detailing the different emotions and feelings can help keep the weight off.
Be the diet that helped lose weight. By continuing the diet, remains stable and there is little risk of gaining weight again.
Stay active. The key to weight loss is to burn more calories than you take in. The key to weight stabilization is to burn as many calories as one takes in now!