I used to (and kind of still do) believe that the entire universe is just the imagination of a little kid in some other place- if that makes any sense.
She'd imagine everything about our world, and she wished and convinced herself so hard, that she actually started believing that we're really here- and we're all just a part of her mind.
Another theory I had, was that all my years in life is just a dream, and when I wake up after I die, I'll be in some sort of "simulation game of life in the past" kind of thing, and it'd be sometime in the future.
...
I don't know if i made any sense just now.
A childhood belief about i'm different

others believed things like this
- I thought a major general is more powerful than just a general (which still kind of makes sense to me)— Demond
- I used to think that life was all a dream and one day i would wake up like a 75 year old woman.( who knows?)— 8 with wrinkles
- I thought that life is a dream and when you die you wake up (maybe it's true who knows?)— Naos
- As an artist, i used to believe that my drawings were visions of my past life.(i had a good past life)— Blind dreamer
- I used to believe that a life sentece was for when you stay in jail for your whole entire life.— Sara
- I used to believe that my life was a video game with only 1 life and that God was playing it. — Rina