What is it they say? Forgiveness means giving up all hope of a better past. It think that is the quote. It's true. The mistake too many people make is that they think they can have a better future while dragging all the baggage of the past with them. And every now and then they unwrap the past and remind themselves and each other of all its problems, and they wonder why things don't get better.
It doesn't work that way. You have to leave the past behind or you cannot have a better future.