What make us, us? How can one person be so sensitive and one person just can't seem to care at all? Why? How did we became who we are? Are we born that way? Are we born an angry person? Are we born a sensitive person? Are we born a happy person? What? Does our surroundings affected us? If so, can we blame the people around us for being who we are? 

I don't understand. Why? How did we became who we are?