I reduced my goal after I fell below 150 lb. I was 140 lb as a teenager and now I weigh about 127/128. There is a case for weighing LESS at 50+ than you did as a teenager because you lose muscle mass and your body is less dense. I am actually a bit thin....

I should add that it took from Dec 2012 to present to lose the weight. When I think about how heavy I was, I am amazed.