We must understand that Forgiveness isn't for the other person, it's for you. When on the Journey of Forgiveness, you must learn to Forgive with Grace.

Forgiving with Grace requires you to allow the Spirit of God to do an inner transformation of your heart and soul which will allow you to Forgive in a manner that you yourself don't have the ability to do.  Invite the Holy Spirit in with you and embark on this Journey of Forgiveness.  Pray and ask the Lord to cleanse your heart and soul that you may be able to show Grace in Forgiveness.