If something makes you happy in this world, you should think of what will happen to you if that thing were taken away.
RumiYou do not see clearly the evil in yourself, else you would hate yourself with all your soul. Like the lion who sprang at his image in the water, you are only hurting yourself, O foolish man. When you reach the bottom of the well of your own nature, then you will know that the vileness was from yourself.
Rumi