It's not enough to eat healthy foods and exercise for only a few weeks or even months if you want long-term, successful weight management. These habits must become a way of life. Lifestyle changes start with taking an honest look at your eating patterns and daily routine.
After assessing your personal challenges to weight loss, try working out a strategy to gradually change habits and attitudes that have sabotaged your past efforts. Then move beyond simply recognizing your challenges — plan for how you'll deal with them if you're going to succeed in losing weight once and for all.
You likely will have an occasional setback. But instead of giving up entirely after a setback, simply start fresh the next day. Remember that you're planning to change your life. It won't happen all at once. Stick to your healthy lifestyle and the results will be worth it.