What keeps us from forgiving the people who hurt us is that we have not yet healed the wounds they inflicted. Forgiveness is the gift at the end of the healing process. We find it waiting for us when we reach a point where we stop expecting "them" to pay for what they did or make it up to us in some way. Yet, forgiveness is moving on. It is recognizing that we have better things to do with our life and then doing them.
O Lord, remember not only men and women of good will, but also those of ill will. But do not remember all the suffering they inflicted on us. Remember the fruits we have borne thanks to this suffering: our comradeship, our humility, our courage, our generosity, the greatness of heart which has grown out of this; and when they come to judgment let all the fruits that we have borne be their forgiveness.