Mathew 6:14, 15
If you forgive men their trespasses, your heavenly Father will also forgive you. But if you do not forgive men their trespasses, neither will your Father forgive your trespasses.
Forgive people quickly if you can. The longer you dwell on the hurt, the harder it is to forgive. Sometimes, we will battle our minds not to let the injury go, but releasing the perceived offense allows for God to heal us faster. Also, remind yourself that forgiveness isn’t saying what they did to you was right. The purpose is so that God will have the freedom to forgive you of yours. Forgiveness sets us free.