According to Chapter 8, what distinguishes a 'successful' human life from a 'useless' one?

Chapter 8 of the Sai Satcharitra draws a clear distinction between a useless life and a successful one. A life is deemed 'useless' if it is wasted solely on the four activities of eating, sleeping, fear, and mating, which makes it functionally identical to the life of an animal. The text explicitly states that if nourishing the body and seeking pleasure are the only goals, the human birth is for naught. In contrast, a successful life is defined by the pursuit of self-realization. The chapter states that a human being is uniquely 'free, fearless, and independent,' and the true success of birth is to use this freedom to realize the Eternal. This involves understanding the 'seed' of our existence—where we came from and who we truly are—which is the path to proficiency and fulfillment.