I'm about your height and weight. i haven't lost any weigh yet but, i'm not really motivated to do it. but my advise (i'm giving it because I know it would work if i tried it) is start with small goals. don't just be like i have to lose 60 lbs in two months or something crazy like that. and besides, no matter what the stupid little weight percentile thing says, it isn't accurate for everyone. there are alot of differences in the way people are built and such. so i'm only shooting for 140. if i ever start dieting. but right now i'm happy with myself, so it's not that big of a deal