Who am I?

I can re-call when I was six; staring into the mirror, back at my reflection and thinking 'Who am I?'
Obviously the smart arse response would be for one to tell me my name, but it wasn't like that.
At such a young age, when other little girls were playing with their barbie dolls, dancing around to spice girls in their pretty pink miniskirts and light up shoes that flashed everytime they took a step, I was trying to find an answer to a question that we may never know. A common thought that crosses my mind is that if we were born in another country or a different family would we still be the same person with the same thoughts? 

how come I can move my arm here and say what I am thinking out-loud so another person can consider the same thoughts. Why do I like to play soccer but 'Lucy' likes to play basketball.

I didn't know it was abnormal for me to think this so young. I thought they were questions that all children asked themselves. but is this not where we are left now. At an age where we can understand our lives.

I am often left questioning, even as a 15 year old; 'What makes me, me and you, you?'
How are we so different, yet so alike? 
there's a movie called 'the happening' and it's about a air born disease that is released by trees and causes people to kill themselves. At the end of the movie, the scientist states 'It was just an act of nature and we will never understand' - Is that where our questions belong? In the 'never understand' box where they can wither as we pretend we are so happy to continue with our lives so cluelessly?