Refrain from anger, and forsake wrath!
Psalm 37:8 ESV
Sometimes in grief you simply must be angry for a while until you get it out, examine it, and understand it. Although anger is unhealthy if it escalates beyond reason or is expressed in harmful ways, for some anger is a necessary part of grief. If this is your experience, at some point likely you will realize that you are unwilling to spend more of your mental resources on the nonproductive emotion of anger. You overpower your anger when you forgive. Determine whom or what it is you need to forgive.
God, I do not want to be angry forever. May I recognize the need to forgive, even as you forgive me for my anger in grief. Amen.
I feel immediate relief when I forsake anger.