Selfish

Why are people selfish? It is not just all about the excess love of oneself. It is a different kind. The lack of concern for someone. We see it. Yeah maybe, that they are giving to others, but then to us there is always a barrier of what it is they give. They expect so much from us, be it in material things or emotional investment. They always expect us to bend over backwards---to always admit to them that they are always the ones who are right, to give what should have been ours, because after all we earned it. We sacrifice our own happiness just to see that certain person smile. But, then we do not even think about how many times have that person done the same for you?