I've heard this repeatedly, but I'm not sure I like the sentiment. It's too often used as a doctrinal way to place the blame on the victim. "God has forgiven me, and if you don't forgive me, you hold the greater sin." It absolves without the need for recompense, and leaves the victim in their hurt, believing God will make it right. Yet they still hurt. I think it's kind of silly that we focus on obtaining forgiveness from God (who has everything, knows everything, and is all powerful), rather than our fellowman. I believe repentance should be more about restoring good relations and making things up the best we can to those we have wronged, over trying to gain absolution from a third party (God).
But that's not doctrine. Blessed are the meek, for I don't have to worry about them.