Why do we find it hard to forgive? Based on 1 Corinthians 13:5 which reminds us that love does not keep record of wrongs, it is a helpful biblical principle to be disciplined in NOT bringing up the offense in the future. True forgiveness means we learn to move on without letting the past become a hindrance.
This is a helpful list of four promises taken from Ken Sande's book, "The Peacemaker."
1) "I will not dwell on this incident."
2) "I will not bring up this incident again and use it against you."
3) "I will not talk to others about this incident."
4) "I will not let this incident stand between us or hinder our personal relationship."
[Ken Sande, The Peacemaker: A Biblical Guide to Resolving Personal Conflict, Grand Rapids, MI: Baker Books, 2004, p209]