My "thesis" is that many MANY people don't heal correctly EXACTLY BECAUSE we do not know how to deal with/process anger.
Remember, anger is part of the process of healing, as described years ago by Kubler-Ross:
Shock
Denial
ANGER
Bargaining
Acceptance
(and the joke about depression being "anger without enthusiasm" is in the mix too)
depression being “anger without enthusiasm”.
Never heard that one before but it’s a gem.