I think you are thinking too much. Sorry to say that. But have you heard about the term "People never change".
People can expand, improve but can't change. So, don't change yourself. If you change, you are not you. But you can expand on yourself:
1. Start on seeking your direction of life. Find a direction or a dream for yourself. People who have a direction and dreams are people who are the most grounded, attractive and living powerfully. They are mostly leaders of the group.
2. Start to keep all of your promise. You need to practice keeping all your promise. It helps you in discipline, study, work, success and relationships with people. A person without keeping their promise are just not reliable.
People just can't count on them and don't like them.
3. Learn to be attractive. You can learn it here
Attractive tips.
Cheers and good luck!

Don't worry and nothing to change! Be yourself.