#5 Drift away. Selfish people never change. They just look for someone to use, and quite frankly, they can’t help it themselves. So if you’re in a relationship with a selfish someone, don’t try to change them. It will never work. Get back at them by behaving just like how they would behave with you, and whenever you feel like you’ve got your vengeance and have the strength to move, walk away for good.