I learned to make my life more pleasant by avoiding those that were less pleasant. I made better choices in life. Those are positives as well. Learning from anger taught me more than almost anything else in life. Learning to get beyond anger, and forgive, made me a better person.
Forgiveness needs to be in moderation.
But at least you can learn to avoid. Now when someone tries to make me angry, my default reaction is not anger back, but sadness or empathy. How sad it must be for them to give up control because of their hurt. I feel compassion for their frustration. I try to give them empathy.