Is it normal if i'm this paranoid?

I always feel like someones watching me. Even if I am alone, I feel like I am on a tv show or something. I wouldnt be surprised if I happen to have my own show like The Truman Show and I don't even know. It has really impacted my social life in terms of being scared of always getting judged. When I come out, I feel like everyone knows me already because of how they stare, Im like what the eff? Is there like a camera in my house and following me everywhere I go and its done for a show on a network I am not aware of? I feel like I can't do anything because everyone knows who I am. I understand, well at least hope, its all in my head but f*ck! How do i get rid of it? I want to be free of my own mind if thats the case. I also learned that this type of thinking could be a clue that I haven't grown up? In terms of cognitive development, an adolescent has an imaginary audience where they think everyone is watching them and noticing what they do. I was like holy crap, thats totally me. Im 20 which is scary cause "Im no longer a teenager" but i still feel like one. Could this be why I feel so paranoid? Or just that I'm really paranoid? I want to get rid of this sooooooo bad! There are too many people to care what they think, but I just do. Every mistake I do I feel like someone just saw and is laughing. I have my own audience in my head and its killing me slowly, but surely.