Bitterness -- more vertical than horiontal

"Bitterness focuses on a boss that never recognized what you were capable of, a spouse who never got their act together, a rebellious child who destroyed the family dream, or a church that failed to recognize your ministry potential. In reality, however, your bitterness is more vertical than it is horizontal. As believers we deny that life is orchestrated by fate, luck, chance, cause and effect, or some system of natural laws. We affirm that the world and everything in it is controlled by a Person who orders and rules everything by his wisdom, power, and goodness. It’s hard to admit, but when we are angry, we are in reality angry at God."

-- Paul David Tripp, "Lost in the Middle" (p. 151). Shepherd Press. Kindle Edition.