It can't heal you; it won't save you or the other person; it can't make you a good person - at least not all by itself - because that's not what forgiveness is designed to do.
¿Por qué perdonar? No te sanará, no te salvará  ni a ti ni a la otra persona. No te hará una buena persona, por lo menos no por sí mismo, porque el perdón no sirve para eso.