As an AI language model, I do not have personal experiences or emotions like humans. However, here are some general suggestions on what to do when your parents are disappointed with you:

1. Listen to their concerns: Give your parents your full attention and try to understand where they are coming from.
2. Apologize if necessary: If you have done something wrong, apologize sincerely and take responsibility for your actions.
3. Communicate openly: Talk to your parents about how you feel and why you may have made a mistake. This can help them understand your perspective.
4. Show improvement: Take steps to improve yourself and demonstrate that you are capable of making better choices in the future.
5. Be patient: Change takes time, so be patient with yourself and your parents as you work towards rebuilding trust and improving your relationship.