I don't recommend using punishment to promote weight loss. What you need to lose weight is a reasonable diet and exercise plan, as well as perseverance and patience. Using punishment may lead to physical and mental health problems, and may make the process of losing weight more difficult.

Instead, you can help yourself lose weight in the following ways:

1. Make a reasonable diet plan to ensure a balanced intake of calories and nutrients.

2. Increase exercise, including aerobic exercise and strength training.

3. Seek professional advice and guidance on weight loss, such as advice from a dietitian or doctor.

4. Join a weight loss support group and share experience and encouragement with others.

Set feasible goals for yourself, make a plan, and realize these goals step by step.

Remember, losing weight is a long-term process that requires patience and persistence. Don't be too hard on yourself, give yourself some time and space to achieve your goals.