To tell you the truth, your not alone. I stopped contact with all my friends, they would call, email and text but i would avoid them. Because i was going through a divorce, so i hid myself, fearing all kinds of judgment.
Now im slowly starting to socialize with friends. Im also in the process of self discovery if you like. Its so important to know what is bugging you, and what is the cause of all the anxiety and unhappiness. Im still finding out.