A childhood belief about criminals

I used to believe avidly in the idea of "if you can't see them, they can't see you." I had an irrational fear of burglars coming in through the windows of my room(which is on the second floor), so every night, I'd get all of my toy stuffed animals and make a fortress on my bed so that I couldn't see any windows and I was hidden. Then I started worrying that since my eyes were so far from my feet, that the burglars would see my feet and know i was there and kill me. To protect me then, I spent a pretty long time before I went to sleep every night trying to think as if my eyes were on my toes so that I couldn't be seen at all.