Maybe you are in the right. Maybe you are standing on the higher moral ground in this situation, and the other person is clearly wrong. You feel that someone ought to hold the person accountable, and so you are doing your best to bear witness to this injustice — afraid that if you don’t, no one will, and that person will get away with it. Something inside you doesn’t want an injustice to be allowed to stand, unchallenged and unrectified. So you remain attached to being right, but that attachment causes you to suffer. You are the one who is obsessed, and you are the one who is losing sleep over someone else’s actions — therefore, you are the one who will have stress-related health problems. Meanwhile, the villain in this story might be peacefully unconcerned about his wrongdoing and blissfully unaware of your rage — and he is sleeping just fine at night!
— Mary Hayes Grieco, Unconditional Forgiveness, p. 25