Based on the teachings in Chapter 19, what is the ultimate duty of human birth, and what steps are necessary to achieve it?

Chapter 19 outlines a clear path toward spiritual fulfillment, stating that the duty of human birth is the attainment of the Supreme Self, which encompasses eternity, fearlessness, liberation, and independence. The text emphasizes a crucial sequence for achieving this goal. It posits that there can be no liberation without knowledge. Furthermore, this essential knowledge cannot be attained without detachment from worldly things. The spark of detachment itself can only ignite when the mind truly perceives the world as transient. Therefore, as guided by Chapter 19, recognizing the transient nature of the world is the first step toward detachment, knowledge, and eventual liberation.