Selfish world

This world is wit lot of selfish people, with people who have no reasons to care for others. Even if you do, they hurt you. I thought am i using the Occam's razor to explain this phenomenon. Its just that those really have no value for you in their life any more, so they really don't need to care for u any more.

Strange for me :-(. but How do i some change ?  Someone who were sweet and caring, changing the opposite.

I remembered my Maths sir words - " Man is the maker of his own destiny". What you choose to be is what u would be. and I don't want to be selfish person.