When your by yourself and too self reliant, it is hard to tell if you exist. You have no social reflection to look at, and therefor feel lost. The simple answer is to socialise, but the harder answer would be define yourself outside of social construct, if being social just is not your thing.
It is extremly normal for one to go through identity crisis. Thought your immediate identity may be clear, sometimes you have to look a little deeper at the why. Why am I a loner? Why do I have what aspireations I have.
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You need your frinds to basically prove themselves to you. Basicallically show you that they are not friends based on fisade alone. I know what it is like to have a friend or what have your, and be lonely. There is a certain faith that needs to happen, a bond to be made or mend. From there, I would not be able to help unless you can figure what bond was broken that made your feel the way you do about social relationships.
That is just my immediate opinion on the subject.
