Of Forgiveness and Letting Go

I think forgiveness is crucial in letting go, moving forward and not stuck in the past.

Its not like we are forgetting it or something...its more like ok this happened and me or you messed up badly, we feel terrible or angry or sad but i don't want to dwell on this anymore because its making me feel all sort of negative things and just vampire sucking all the good feelings, so i acknowledge it has happened, and nothing we can do about it and lets repair/do something else/improve/avoid this etc.

But forgiving, does not mean we are forgetting though, kan.

Our prophet had such thing too with the murderer of Hamzah r.a, who had  repented afterwards.

He did forgive the man, but he never wanted to see the man's face ever again.

But still, Rasulullah forgave him because of Allah.