Here's an idea: you use a diet to lose weight, right? But along with the diet's weight-loss function, you get other perks.
You can actually use a diet as a means for personal growth. A weight loss diet can expand your horizons by affording you more self-knowledge, helping you learn coping skills, and helping you find new strengths that can be transferred to other areas of your life.
When you go on a weight loss diet, you are for sure changing the way you eat. But you are doing more than that. If you overeat, and you try to stop doing it, there will be the inevitable conflict between your habit of overeating and sticking to your diet. In order to settle this conflict in favor of sticking to the diet, you will need to face certain things about yourself. And if you are to lose the weight for good, you'll need to permanently change these things about yourself, and that's no easy matter.
Losing weight is always a personal journey, one well worth taking. It yields personal triumphs beyond just pounds lost.