Forgiveness is better than revenge.

Know thy opportunity.

Forgiveness is the remission of sins. For it is by this that what has been lost, and was found, is saved from being lost again.

Little, vicious minds abound with anger and revenge, and are incapable of feeling the pleasure of forgiving their enemies.

Thou whom avenging pow'rs obey, Cancel my debt (too great to pay) Before the sad accounting day.

You can't undo anything you've already done, but you can face up to it. You can tell the truth. You can seek forgiveness. And then let God do the rest.