Mostly when my parents where were not home, my room had much to do with my bubble. It was a relatively sure place. There were also two rooms a store above, and, further above there was a terrace, and the roof. I could walk on the roof, which was a little dangerous (fourth floor), but physical danger was not what frightened me.
What frightened me was that my parents, especially my mother, could penetrate my bubble. Once I was punished at school (put behind the blackboard). I came home for dinner rather downtrodden. I didn’t say anything about my punishment at school, but my mother asked “what happened?”, I was scared to death, not because I might be scolded, but because I thought that that my mother had, perhaps, the power to enter my mind and explore my bubble.
So, for now, I know that, when I was a child, my bubble had something to do a) with my room b) with the secrets of my mind.