According to the philosophy in Chapter 8, what distinguishes a truly proficient human from someone who is simply existing?

According to Chapter 8, the distinction between a proficient human and one who is merely existing lies in self-realization and understanding one's true purpose. The text argues that a life consumed by the four activities of eating, sleeping, fear, and mating is no better than that of an animal. A truly proficient person, as described in Chapter 8, is one who contemplates and understands the answers to fundamental questions: "Where have we come from? Who are we? What is the reason for human birth?" The chapter states that knowing this "seed" of existence is what makes one proficient, while everything else is just exhaustion. The ultimate success is the realization of the Eternal.