God's forgiveness is unconditional; it comes from a heart that does not demand anything for itself, a heart that is completely empty of self-seeking. It is this divine forgiveness that I have to practice in my daily life. It tells me to keep stepping over all my arguments that say forgiveness is unwise, unhealthy, and impractical. It challenges me to step over all my needs for gratitude and compliments. Finally, it demands of me that I step over that wounded part of my heart that feels hurt and wronged and that wants to stay in control and put a few conditions between me and the one I am asked to forgive. This "stepping over" is the authentic discipline of forgiveness.
~ from RETURN OF THE PRODIGAL SON by Henri J. M. Nouwen