Look at it this way. You sustained a 54+ pound weight loss. AND you are stopping your weight gain after only gaining back 23 pounds. It is easy to slide. Some of the 23 may be muscle, and you clearly have some tools that work if you've kept off 54 pounds. Be firm with yourself but keep it gentle. I know for myself if I'm to fatalistic it leads to giving up, not riding, and eating to much of the wrong food.