You have to find the weight-loss method that's best for you and the target weight that's best for you. To maintain your weight loss, you have to stop weight gain as soon as it begins and not let your weight creep back up. Nutrition experts at UT Southwestern Medical Center at Dallas say you're more likely to keep off your weight if you lose it slowly, a pound or two a week. A crash diet resulting in rapid weight loss is not likely to result in long-term weight maintenance because you didn't really change your eating patterns. It's better to restructure your eating patterns to include nutritious, low-fat foods than to rely on fad diets or diet aids.
Exercise is also key to losing weight and keeping it off.
Find something you like, and stick with it. The exercise program doesn't have to be elaborate. A brisk walk several times a week is beneficial. You also don't have to restrict yourself completely from treats. Allowing yourself the occasional treat can help alleviate the cravings that weaken your resistance to the point where you eat the whole box of cookies.