It's hard to describe the feeling, but I feel like I'm a fake. I replaced the original version of myself. I stole the body I'm in from someone else and I don't know who they were. It comes back every now and then, and it's hard to get rid of. Its like imposter syndrome but it's about me as a person. Not my skills, but my own identity. I don't feel like I'm the original version of me.
Is there a term for this? I can't find anything via Google.