The integration of the dark side is a recurrent part of my LSD voyages. I usually project these forces as egoic overlords, or fake gods who keep the entire universe under their control. Their acts come from a state of perversion which they identify as the final truth. The way I conquer them is through faith: I follow the narrow way (the non-egoic way, the way of sacrifice which they don't understand), go through the death on the cross, where they all die with me and are born again in the new life as my servants: my flesh, my blood, my senses, my abilities and everything that I am. Those elements that were asymmetric, chaotic and world-destroying in the old world become parts of a life-sustaining support system afterwards. The energy is not lost but channeled into a new way of being.
What I especially like in this process is how these "overlords" understand (which never comes too easy) that the things that they were hated for in the old world will not be taken away from them (this conviction of theirs is why they hate the idea of a God-driven life), but they will get these back and they can use them for good purposes afterwards. In the new universe, the same drives which resulted in dark deeds in the old world are used to operate a world of beauty. And while they were manifest as dark lords in the old world, now they are invisible as forces of life.