The cycles of Karma have been perpetuated by love. How so? The origin and destiny of all things is love, the cosmic consciousness which connects all things is love, there is no getting away from that. We are all connected through karma, and Karma originates out of love as well. Think of it this way: could you go to heaven if your beloved is in hell? No, you never could. You might go, but your heart would remain with your suffering beloved and would never be at peace, and therefore you would never be fully in heaven, since heaven is eternal peace. In Buddhism, The Bodhisattva is one who achieves enlightenment, an end of their suffering, but stays in the karmic cycle out of their commitment to love, to be with those still suffering and show others the way. In a sense, we are all a kind of Bodhisattva, choosing to return to the darkness out of love. We are all one, so if you cannot go to heaven, neither can I. We will ascend or perish as one.
I believe what may have happened is this: in the beginning, we were one with source. At some point, we decided to see what it was like to experience separateness. When we separated from source (which was done via the creation of an illusion that we were not of source), we became lost in unconsciousness. Since the Source sees us as beloved sees the lover, the source sent more and more parts of itself to bring back the lost ones back. This is like the shepherd analogy in the Bible, who will always look for his lost sheep. The source chose to not allow the lost sheep to wander forever in darkness, but has done everything it can to bring all beings back to itself, back to the light from which they originated. We, as humans, are all part of this divine project. We are the beings who have made this choice to go into the darkness and bring it back to the light. And in so doing, we have learned great lessons about what we are. We have learned by virtue of facing the energies which are not of source, namely fear, and in response we have expanded the energies which are of source, namely love. This love is not just love of what is good and beautiful and right. This is love that is unconditional, it does not require perfection, this is love that cannot be conquered by fear or darkness. This is the human love that stands strong in the face of suffering and has the power to transmute the dark illusionary forces into light. Our martyrdom has expanded the universe, which is built on love, since it has pushed the very boundaries of what love is capable of.
Your purpose, therefore, is to be the light in the dark place. The light is consciousness, the dark is unconsciousness. You brought the light here with you, it is you. Therefore your purpose is to be yourself. You release yourself from the cycles Karma by being the light that you already are, and then you become a beacon for others to release themselves. I believe Karma is much more forgiving than most people think, because the universe itself is without judgment, it is only here on this earthly unconscious plain that we judge. We are not here being punished for past misdeeds, rather we are here to learn how to shed the light in the darkness, and we have been willing to come here as many times as it takes for the light to fully penetrate the dark. In that process we have often gotten lost in the dark, but that is OK, it is all part of the process. In order to transcend the darkness of unconsciousness, one must fully experience it. After all, you cannot transcend anything that you do not fully experience.