I don't know... I'm no preacher. I just know what works for me, and I'm not sure I can help you, but I think you'd feel better if you found some kind of religious awakening. I don't know though, but I wish you the best of luck.
What makes us human? The parts we have make us human. unless if you are asking about a conscious but a conscious doesn't exist. the ability to understand your own existence is a result of a high amount of neurons in our brains. we are all computers that take in, analyze, and recognize patterns. it just so happens we are such advanced computers that we don't seem to act like the simple calculated matter of our own computers. and having just the amount of computational power that a human has is what makes a human a human.