I too felt like a child. But my mother died when I was 3 and my father remarried when I was 5 and my stepmother and I didn't "match" very well. I had several "lives" I remembered; before my mother died, between mothers and then after my stepmother. My mother dying and between mothers was all mixed up until my therapist and I straightened them out. Maybe you can think of a couple "different yous" and how you'd like them to "make sense" and tell the doctor about that?

The rubber band trick isn't bad, it works but it's not very "personal" not someone making a connection with "you" which I think is what you want. I spent 10-15 years in a fantasy world of my own making and that was 10-15 years I wish I had been paying attention to reality. A lot of things make more sense now that I am older; it's a little like when you're a little kid and then in your 20's and 30's and more makes sense. When you get to your 50's even more makes sense :-)

Keep posting, talking and trying to put things into words really can help.