Make the decision to forgive sooner rather than later as it is a choice that just requires your will to assent. From there, you should find the block removed and God will be free to move in your life to help you work through the healing process.

It’s a simple prayer really. “God, I choose to obey your Word and forgive X for Y even though it still hurts. I give the injury and all of its pain and unwanted fallout to you to take to the cross. Please forgive me for holding Y against X for as long as I have and please give me your grace to be healed of this. In Jesus name, amen.”

God understands that you can’t instantly turn around how you feel, but He does expect us to choose obedience. From there, He can help us take care of the rest.