Yes. Good decision. You can do this yourself if you have will power.

What you label as introvert might be poor self esteem. When you don’t like yourself, you don’t like others as well. Try working on self awareness and self acceptance and you will find wonderful people around you. We are social animals and people around us have so much to offer to our evolution and growth. Shunning them is missing an opportunity to learn. So try to get out of your comfort zone and try perceiving yourself and people differently. If you are unable to do so, you can take sessions with a psychologist to help you overcome self esteem issues.