Most of the time when we think of forgiveness we think of God forgiving us. However, at the end of what we know as the Lord’s Prayer Jesus gave the people he was speaking to this teaching about forgiving others. “For if you forgive men their trespasses, your heavenly Father also will forgive you; but if you do not forgive men their trespasses, neither will your Father forgive your trespasses” (Matthew 6:14-15 RSV).
The need for forgiveness among people comes from us having to live as imperfect people in a fallen world. Fortunately, Jesus gave us two commandments that form the basis of right-minded forgiveness. Love God with all our being and love everyone—including ourselves. Forgiveness should be based on love not on a desire to get right with God by obeying a commandment. Also, I think Jesus had in mind that our love should be as clear-sighted as his and not fogged by cultural constructs. Be that as it may, commandments are always impossible for us to completely obey. This brings us to how we go about the matter of forgiveness.
To be able to truly forgive others, and ourselves when we fail to do what is right, we must ask God to grant us the ability to love in a way that exceeds our present capacity. We need from the Holy Spirit a filling of love so we can forgive others and ourselves not on the basis of their or our righteousness but because we have been enabled to have in us more of God’s love
I also believe following the guidance of the Lord’s Prayer keeps us from asking God for mercy and refusing to grant it to others.