What do you do to strengthen your heart while you wait for the forgiveness your heart longs for?
1. Remember that there is One who forgives and rejoice in Him. (Phil. 4:4; 1 Thess 5:16-18)
2. Put your trust in God, not in a human capacity to forgive. (Prov. 3:5-6)
3. Pray that your antagonist will not harden their heart toward God's convicting Spirit (1 Timothy 1:18-19). [Far more dire consequences than lack of reconciliation with you are spoken of.]
4. Overcome the evil of others with the goodness of your actions and prayer (Romans 12:17-21)
5. Meditate on the 12th chapter of Romans--especially verses 9-16 and on all the verses quoted here.
6. Look with hope to the grace of God.
Romans 12:9-16 (ESV)
9 Let love be genuine. Abhor what is evil; hold fast to what is good. 10 Love one another with brotherly affection. Outdo one another in showing honor. 11 Do not be slothful in zeal, be fervent in spirit, serve the Lord. 12 Rejoice in hope, be patient in tribulation, be constant in prayer. 13 Contribute to the needs of the saints and seek to show hospitality. 14 Bless those who persecute you; bless and do not curse them. 15 Rejoice with those who rejoice, weep with those who weep.16 Live in harmony with one another. Do not be haughty, but associate with the lowly. Never be conceited.
 The Holy Bible : English Standard Version. 2001. Wheaton: Standard Bible Society.