When less well-developed, they show their perfectionism, with an internal judging voice that chastises them (or others) for falling short of perfection (preaching). In a very healthy individual, that voice invokes higher attainment (teaching).
Their driving force is anger, typically over-controlled until it erupts as resentment when someone has failed to live up to their expectations. They're prone to moral tirades, yet they also show a "running amok" side that allows them to escape their own high standards.
Typical Comments "I know I'm right, why should I have to compromise?" "I'm my own worst critic." "My whole career, I've been brought in to fix things." "My message as a kid was always, 'You can do better.'"
First-Order Change De-potentiating their critical voice, allowing themselves to be wrong (see video below), techniques for channeling anger more effectively, learning to respond to criticism non-defensively, and moving away from black-and-white thinking with positive reframing and creative problem-solving.
Second-Order (Transpersonal) Change Developing nuance and options. Patience, the willingness to accept conditions that don't conform to one's ideal.