When I get stuck at a plateau, I try to find a new way to remind myself how far I've come and it inevitably helps me refocus and re-energize my efforts.
Here are some things I've done:
1. Fill a backpack with weights to match how much weight I've lost. Carry it around for a few minutes, and realize how much pressure I've taken off my body.
2. Over the course of a week (or more), walk a mile for every pound I've lost and track it.
3. Write my number on the bathroom mirror in lipstick.