I think the first 25 pounds are much harder to see than the last 25. At first you're just getting smaller, it's not until you approach your goal weight that your shape starts to change.

Very few people noticed my losses until I reached 100 pounds. Then it got a little embarrassing, with the "gosh is that really you?" comments. I'm curious to see what happens after the next 50 lbs, maybe I'll be able to assume a whole new identity without leaving town.