Humans can endure a good deal of sustained psychic pain, so most people typically stop growing where it is easier to endure pain than to grow to a condition where it is eliminated in favor of an interesting newer kind of pain, caused by an a novel kind of resistance. The equivalent of terminal velocity for humans is a painful equilibrium between the ego-growing forces of acceleration under the gravity of “free” work, and the attrition drag forces of rejected responsibility. Like a meteoroid, you might either burn up in the atmosphere, turning into a meteor, or make it to a crash-landing as a meteorite.