hey i know how you feel I am also 18 and about to leave for college. I weighed for most of my life a lot more than my friends. And to be honest I hate myself because I cant see anything but me being fat. Well anyway I was 180ish and now i am down to about 137. All i did was a lot of excersice and a ton of fruits and veggies. I dont eat out very often and when I do its only once in awhile. I also quit eating red meat. I stick to chicken a lot. Make sure you drink lots of water too. OH and take vitamins so that you stay healthy. It will start to help you out. good luck