I have noticed something about before and after pictures. Even if the person isn't at goal the after pictures look soo much better. Whether it is 5 or 50lbs there is a different light behind their eyes. They look happier, more confident, and proud.
I think it must have to do with a sense of accomplishment and confidence in their ability to take control of their lives. I love before and after pictures! So keep up the amazing work and realize how much you have accomplished whether it is 5lbs or 50lbs.