That’s the great thing about being a man: being selfless is a new concept for you. You’ve had the option of being selfish all your life. Women haven’t. We are taught, almost subconsciously from birth, to give of ourselves until it hurts. And once it hurts, give a little more until you start to pass out from the pain. Then and only then, can you stop (and most times, you’re only stopping because you literally can’t do it anymore due to illness or injury). So her advice to be a little more selfish may not be for you. But it’s EXTREMELY helpful for women who have been selflessly ant tirelessly working to help somebody else, almost everyday of their lives.