Emmet Fox's forgiveness procedure (short, adapted version)

The method of forgiving is this: Get by yourself and become quiet. Repeat any prayer or treatment that appeals to you, or read a chapter of the Bible. Then quietly say, 'I fully and freely forgive X (mentioning the name of the offender); I loose him and let him go. I completely forgive the whole business in question. As far as I'm concerned, it is finished forever. I cast the burden of resentment upon the Higher Power within me. He is free now, and I am free too. I wish him well in every phase of his life. The incident is finished. The Truth—universal harmony and peace—has set us both free. I thank God.' Then get up and go about your business. On no account repeat this act of forgiveness, because you have done it once and for all, and to do it a second time would be tacitly to repudiate your own work. Afterward, whenever the memory of the offender or the offence happens to come into your mind, bless the delinquent briefly and dismiss the thought. Do this, however many times the thought may come back. After a few days it will return less and less often, until you forget it altogether.

Adapted from Emmet Fox