29 Do not let any unwholesome talk come out of your mouths, but only what is helpful for building others up according to their needs, that it may benefit those who listen.
30 And do not grieve the Holy Spirit of God, with whom you were sealed for the day of redemption.
31 Get rid of all bitterness, rage and anger, brawling and slander, along with every form of malice. (ie: grudge)
32 Be kind and compassionate to one another, forgiving each other, just as in Christ God forgave you.NIV
I noticed that it does not say "forgiving each other, until you are tired of it and you feel that the other person should have learned their lesson by now"
Feeling conviction....and needing God's help.