I have a friend who was surprised to discover the concept of a "lucid dream". It turns out all of his dreams are lucid and he assumed it's the same for all people.

A psychological experience I have (albeit very rarely). I suddenly realize that I am really me. In comparison, all the rest of life feels like watching a movie in which I am just one of the characters. Sorry if it came out confusing, it's a bit hard to explain! With age the occurrence seem to have become even rarer (I don't remember when I had the last one but it might have been over 10 years ago).