Unforgiveness is not one of them. Search your heart as you stand before God in prayer. If there is someone you need to forgive do it immediately. Forgiveness takes the grace of God and your will. By the grace of God you can choose to forgive.
Forgiveness is different from reconciliation.
You can forgive another person in his or her absence. Reconciliation may take place later. Forgiveness is between you and God. Forgiveness is you deciding not to hold anything against another person even though that person may not desire your forgiveness and you may not even think the person deserves it. Jesus forgave us even though we did not deserve it.