God invented forgiving as a remedy for a past that not even he could change and not even he could forget. His way of forgiving is the model for our forgiving.
If you cannot free people from their wrongs and see them as the needy people they are, you enslave yourself to your own painful past and by fastening yourself to the past, you let your hate become your future.
The rule is: we cannot really forgive ourselves unless we look at the failure in our past and call it by its right name.
Forgiveness is the key that can unshackle us from a past that will not rest in the grave of things over and done with. As long as our minds are captive to the memory of having been wronged, they are not free to wish for reconciliation with the one who wronged us.