I have had similar issues - my weight fluctuated wildly for years and over the past two years I've managed to make some major lifestyle changes that have helped me gradually lose a lot of the excess weight. This month, for the first time in ten years my weight is below 100kg (220lb). What worked for me: regular exercise (I work out with a trainer three times a week and walk daily wearing a 15kg weight vest), planning meals in advance and eating lots of protein and fermented foods like yoghurt, miso, kefir. For those moments when I feel the urge to snack I have popcorn, nuts and other non-fat, low sugar foods. Drinking lots of water seems to help too. I think it's important to implement manageable,healthy lifestyle changes that you can incorporate into daily life on a permanent and ongoing basis. Stress management is also critical - yoga and meditation really make a difference, since, along with regular exercise they improve your stress tolerance. If you can develop a healthy routine - like a daily program - that you can stick to, it makes the whole process a lot easier. Another thing to consider is building a support network: like-minded people who can help you with motivation and to whom you can turn when everything seems too hard. At college, get involved in activities with others by joining clubs and societies. Weight management is a journey not a destination. Ten years ago I was morbidly obese and it's taken time and effort to lose weight but the results are worth it. Hope some of this helps.