Sometimes my mind plays games on me and I still see myself at my highest weight, even though I've lost 55 pounds.
Here are two tools you I've used to help keep me motivated and focused (especially if you think you haven't come as far as you would have liked to come):
1. Put on one of your biggest pair of jeans (I hope you kept one pair) and take a good hard look in the mirror - I'll bet there's room for a child to fit in there with you!
2. Go to the supermarket and put two 20-lb and one 10-lb bag of rice on the floor. Now try to pick it up and carry it up and down the aisle a few times. How do you feel?
After huffing and puffing (and making a spectacle of myself), I told myself, "You used to carry that weight ALL THE TIME!"