Bear with each other and forgive one another if any of you has a grievance against someone. Forgive as the Lord forgave you. ~ Colossians 3:13
Carrying a grudge against your brother doesn't harm anyone else but you. Left unconfessed a grudge becomes a voice in our head which begins to negatively shape the way we think and live.
Unforgiveness is a cruel punishment inflicted upon yourself. Jesus knew this about mankind. Its why he emphasized forgiving others!
God is gracious enough to forgive our countless mistakes. Today is the day you should forgive whoever did whatever to you and unlock the prison door.