Am I going insane?

I am a social phobic. I stay away from large groups and people I don't know. I wish I could be normal but that seems as if it's not worth wishing for anymore. I've been single my whole life. I'm anxious 95% of my life. And well I think I could be driving my self to the point of insanity. One once told me people who live alone and have no social interaction would go insane. I seem normal to the average Joe. But my mind never stops thinking. I live in a perpetual state of endless thought. And lately I have been dreaming so vividly. I'm a nerd and I have an odd sence of thought. Can anyone help or have any suggestions.