Why?

What makes some people nice and some just plain mean?  What makes some people giving and others selfish?  What makes some people truthful and others tell a lie every time they open their mouths?  What makes some strive for happiness and some people strive to make others miserable?  Why is it that when people are jealous of you or what your life is-they feel the need to try to put you down in anyway possible?  Why are girls so mean????  Why can't some people just be happy?  Why is it that some give more than they take, and others take more than they give?