Not live for yourself where you become selfish...its more like live in such a manner that you strike a balance between being selfish and self centered and being a doormat and selfless. Its more like don't go to any extremes in what you do and love and respect yourself along with loving and being dutiful to others.

Make your own happiness and don't expect another humanbeing to be the one your whole life centers around. Because a human being is prone to change and if nothing else remains mortal. So live a life with no regrets and do what you must neither less nor more.