Jesus said, ".....And when you stand praying, if you hold anything against anyone, forgive them, so that your Father in heaven may forgive you your sins."
It is true that we do find the act of forgiving difficult to 'just do'. Our 'flesh' has all the reasons, all the facts, all the excuses and all the evidence not to forgive. In other words we do struggle with true and complete forgiviness. But the truth of the matter is that we, as individuals, have offended someone somewhere knowingly or unknowingly. Above all, we have definately sinned against our Heavenly Father, yet He has forgiven us of the worst offence. So let us be like our Father and forgive. Let us ask The Lord to use us to forgive others. Let us not trust our flesh to forgive but trust our heavenly Father to use us to forgive others.