It is possible with His help

Forgive us the wrongs we have done, as we forgive the wrongs that others have done to us. (Matthew 6:12 GNT)

 The first time I heard that, my heart hurt, and I felt so ashamed. Why? Because I knew there were folks I hadn’t forgiven. Yet I really wanted God to forgive me for stupid things I’d done that hurt someone else. I even felt rebellious against that statement; that’s why I was ashamed.
 I didn’t want God to forgive me the way I forgave others, because I knew I hadn’t forgiven others! But I wanted God to forgive me, because He is merciful, and because I really needed it, and because I was sorry for what I’d done. But others weren’t sorry for what they’d done to me. So that wasn’t fair! Or so I thought.
 Forgiveness is not easy, yet it is possible with His help.
 I have discovered that forgiveness is an ongoing process, the full circle of forgiveness may take time to complete, yet it does eventually bring us peace of mind and rest of soul. Thank God! —Yvette Gladstone [1]

 If you have ever seen a country church with a bell in the steeple, you will remember that to get the bell ringing you have to tug awhile. Once it has begun to ring, you merely maintain the momentum. As long as you keep pulling, the bell keeps ringing. Forgiveness is letting go of the rope. It is just that simple. But when you do so, the bell keeps ringing. Momentum is still at work. However, if you keep your hands off the rope, the bell will begin to slow and eventually stop. —Corrie Ten Boom

[1] Anchor Forgiveness: The Ongoing Process