I'm Constantly Paranoid, I'm Pushing Everyone Away. I Feel As

I'm constantly paranoid, I'm pushing everyone away. I feel as if they are all out to get me. My day dreams sometimes feel real as if they happen in real life. Sometime I do things I can't explain as if I'm outside looking in. It's almost like it's not me controlling my body and people tell me I did something I can't remember . I'm not on any drugs this is a life struggle I'm 25 and been having issues since I was about 16. I fight with myself everyday to stay focused and calm its beginning to ruin my life and everyone around me.. What can I do to help stop this ?