You might want to look up depersonalization. It happens when you've been depressed for so long that nothing feels real anymore.

Wow never heard of depersonalization

Sometimes, I think I see someone rarely, but no hearing of footsteps even with some silence. One time I saw a bat's shadow gliding around my home. At first I thought of bird, then for a split second of brighter lighting was a bat. Some of my dreams they were discount opportunities, but I was just dreaming it.

Winston Churchill expressed feeling that way too.

I often feel that, I'm different than peers of mine. Feel as if my life is surreal as I'm out of step with mankind. I think it's a challenge that some of ús with disorders that feel different have to remìnd us we are ok. Does that make sense?