Almighty ever-living God, who govern all things, both in heaven and on earth, mercifully hear the pleading of your people and bestow your peace on our times.
"Be merciful, just as your heavenly Father is merciful."
Remeber the Prodigal Son's brother? Rather than holding onto the sins of another, praise the Lord for their repentance.
Humbly ask forgiveness from those you have offended.
Seek no reward for your mercy; don't brag about your forgiveness.
It's the best way to prepare for Mass. Receive the Lord's mercy and the grace needed to continue in conversion.
Don't just say "I forgive you."
Have the courage and humility to begin mending a damaged relationship.