Anger doesn't resolve issues it only makes it worsen. No good things could be achieved with stiff head. We really need to learn how to control our emotions when dealing with people even if they offend us. We should learn how to let go and make matter rest without too much talk. We are all human beings and there's no way we won't get angry when we were being wrong but we should always take things easy and learn to forgive. Or why holding grudges when we know we are still going to reconcile with the person in question.