I used to wonder who I was a lot, for similar reasons. But, it turned out that (a) some part of me knew all along anyway, and (b) the question wasn't nearly so important as I thought it was, because who we are is essentially one little part of the world that's always changing in response to all the other parts of the world. Or, as a friend of mine puts it, "a small piece of the universe observing itself". The search to find out who I was turned out in some ways to be fruitless, because looking for it with the part of my head that cared about those things, meant not being able to understand it because that kind of thinking is fairly useless, and meant being deceived by a number of false ideas. Done better to know who I am since I stopped worrying about it if that makes any sense, and the kind of thinking that makes me aware of that sort of thing was then given enough prominence that I could be aware of the fact that I was aware of who I was. Or something like that.
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"In my world it's a place of patterns and feel. In my world it's a haven for what is real. It's my world, nobody can steal it, but people like me, we live in the shadows." -Donna Williams