I think this is just having an overactive imagination. I can relate to this in a way. I don't get real life and my imagination mixed up though. Some people are just "in their heads" more than others. It may not be normal, but I for one, do not care about being normal. Technically, being introverted isn't "normal" because (as far as I know) there are far more extroverts in the world.Well, I talk to myself in my head too I suppose. I think that's completely normal. However, I make up little scenes in my head; all sorts of things and scenarios with me involved. I'm so often in my own little dream world that real life surprises me haha. When I'm walking along the street for example, and a car beeps, I always jump out of my skin because I was so far away somewhere in my head. Sometimes I get real life & my life inside my head mixed up.