To do things out kindness and not thinking of yourself

First of all I was bourght up knowing that you should treat others as you would like to be treated. So all my life Ive done things for otherpeople, like my family and my close friends. For a exsample if my children wanted to go some where for the weekend and I had made plans too. Iwould change my plans for them. Also when my mother was still alive, I would always do for her instead of myself. My mother had MD like my dauggter Julie, except she couldnt do for herself