J.K. Rowling worked with archetypes in 'Harry Potter', and portrayed this concept of polarity in the relationship between the protagonist and his nemesis.
As I head into another year of my life, I hold on to one of my favorite quotes by spiritual teacher Ram Dass: "We are all just walking each other home."
Life is hard enough without putting pressure on ourselves. In Divine right timing, all will unfold, and as Juliana of Norwich said, "All shall be well."