Love brings joy. Hatred brings sadness. No one lives truly happy having an unforgiving heart from unreconciled conflict with others. In a broken relationship, pain is inevitable. But pride in not forgiving is unacceptable. One may buy time to be able to forgive. But to give no time for it is inexcusable. Do it and be happy. Remember the person you had conflict or argument with, that in one way or another, you both hurt each other. Find a way to renew your relationship with him/her and let him/her experience the beauty and joy of true conversion. Write a letter asking for forgiveness.