" We think of forgiveness as a thing. An incident. A choice. But forgiveness is a process. A long, exhausting process. A series of choices that we have to make over, and over, and over again.
Because anger at having been wronged—the rage, the fury, the desire to lash out and cut back—doesn’t just vanish because you say to someone, “I forgive you.” Rather, forgiveness is an obligation you take on not to act punitively on your anger. To interrogate it when it arises, and accept that you have made the choice to be constructive rather than destructive. Not that you have made the choice never to be angry again. "

― Elizabeth Bear , Ancestral Night (White Space #1)