One cannot oust selfish thoughts and desires from one’s heart and leave it empty. Only by filling the heart with spiritual, altruistic desires instead of selfish ones can we replace the old aspirations with opposite ones, and in this way obliterate egoism.Those of us who love the Creator are sure to feel revulsion toward egoism, since we know from personal experience how much harm the ego can cause.
However, we may not have the means to rid ourselves of the ego, and will eventually realize that it is beyond our power to oust egoism, since it was the Creator who had endowed us, His creations, with this quality. Although we cannot rid ourselves of egoism by our own efforts, the sooner we realize that egoism is our enemy and our spiritual exterminator, the stronger will be our hatred of it. Eventually, this hatred will bring the Creator to help us overcome the enemy; in this way, even our egoism will serve the purpose of spiritual elevation.
http://www.youtube.com/watch?v=iRZZzUYIKAU