Book 3 of the field guide addresses the question, How do I lead all these people, anyway. They’re all so different?St. Gregory was years ahead of Myers-Briggs and even Strengthfinder. We need to know our strengths, but St. Gregory shows us how virtue can lead to vice, and vice can lead to virtue, and what to do about it.St. Gregory's Summary Statement for this chapter:How to address a group of people so that their virtues are strengthened, but the vices that oppose those virtues do not grow.