
Living in a universe that quite literally pulls everything toward you that you vibrate with, being in a constant state of unhappiness will only attract more of that to you.
My spirit guide and I had it out many times over the power of forgiveness as I could not see how allowing someone that had done so much harm should be let off the hook. Letting them "off the hook" is exactly what we should do to free ourselves from the energetic (and sometimes karmic) ties we have created with our abusers.