In the presence of God, nothing stands between Him and us - we are forgiven. But we cannot feel His presence if anything is allowed to stand between ourselves and others.
Forgiveness is the answer to the child's dream of a miracle by which what is broken is made whole again, what is soiled is made clean again.
If a good person does you wrong, act as though you had not noticed it. They will make note of this and not remain in your debt long.