It can be hard to figure out who you are, and some people are never fully sure. Also, I guess who we are changes with time - maybe not the absolute core, but we grow, evolve with the times (or devolve, occasionally.) We jump about in fits and starts.
I sometimes like to think that most of us (even if we don't know it) are on a journey towards finding some divine spark inside of ourselves. We need to plunge into the recesses of our minds to do that.