Asking because I've only just discovered this is an actual thing, with a name, practiced by other people!
When I was a little girl I remember lying in my bed awake at night trying to get to sleep and my mind would start wondering into "who am I?" territory. The only way I can describe it is like constantly asking yourself, your true inner self, what you are, who you are, why you exist etc. I'd keep doing it and go further and further "inside" almost like going deeper and deeper into space. Until I got so scared of "losing myself in there" so I'd get myself out again.
I'm aware I probably sound like a loon, I've never done this as an adult I think once I went so deep and got a bit freaked out and just forgot all about it. I was reading a book tonight which mentioned "the method of self-inquiry of Advaita" so off I went to google and ended up on Wikipedia, which called it the "I thought".
Anyway I just wondered if there was anyone else out there who had ever experienced this or something similar. Not sure I'd do it again but would love to hear thoughts or experiences! 