I think an important part of staying motivated is to picture in your mind your goal. I made this chart for myself. Basically it coorelates between what weight I am and what size I wear.
231 size 18
My goal for this year is to lose 52 lbs that would put me at 179 lbs and right around a size 12. Right now I am at 216 lbs and a size 16. Hopefully I can look at each benchmark and use that to motivate myself to keep losing weight. I think this is a great tool for anyone trying to lose weight.