Philosophy question of the day

I was reading in a book today and the little girl asks her mama, "what makes you you?" I find that question very intriguing. What does make me me? Is it my experiences? Is it my looks, my actions, my thoughts and passions, what I own or my family? Is it what other people say I am or do I get to decide what makes me me. I don't know if I have thought that much about it before but I know my faith is a huge part of what makes me me along with all that I have experienced. I think that is why we are all so different. Even if we experience the same things we will be different because we will interpret the experience through our own filter systems. And what is true one day can change by the next because we are forever changing. Understanding who we are is a key part of knowing what our purpose is. If someone were to ask you that question, what would you say? What makes you you?