I have recently begun listening to the podcast The Adventure Zone, a Dungeons and Dragons podcast by the McElroy brothers of My Brother, My Brother and Me and their father. As I've continued through the storyline, I've realized that a lot of the story of the Balance arc has a similar slant to the story of my own Creatures of the Void.
I can't reveal the specific tenets of the story that are similar to mine, as they are central concepts to the world and would be massive spoilers. However, rest assured that I have not resorted to stealing ideas. All of CotV is planned out already, I have only to write it.