A childhood belief about i'm different

I sort of lost touch with reality when I was about 6 years old, and I'm still not sure what caused it. I was convinced for about a year that I was in a TV show, kind of like the truman show, so I would do random quirky things for the audience, like 4th wall breaking. I also got stressed when I was seperated from my parents because I thought they were being replaced by imposters. This happened when I would lose then and they would turn up at a different place than where I thought they had gone, so I thought the originals had been kidnapped.