you're laying in bed and you feel yourself drift away, but you're not dying nor going to sleep, but rather you zone out and feel yourself enter the 2nd Dimension, materialized in front of you are three beings that look exactly like you, but are based on three separate personalities

Me: Hi, I'm Me. Myself: I'm Myself. I: And I am.. well, I. Me: We are your subconscious. We're the ones you talk to when you're alone with no one else around.