Based on Chapter 17, what are the primary obstacles that prevent a person from attaining knowledge and spiritual peace?

Chapter 17 identifies several key obstacles to spiritual progress. The most fundamental is the false allure of Preya, the path of worldly pleasure rooted in ignorance (Avidya). The text states that desires for seen and unseen enjoyments, hope, and cravings are obstacles that must be dug out by the roots. Furthermore, it explicitly names lust and anger as two tendencies that disrupt listening, contemplation, and meditation, thereby preventing the attainment of knowledge. Finally, Chapter 17 concludes that a person who is always restless, with an unsatisfied heart and a mind distracted by the greed of the senses, will not find peace, even if they are otherwise considered learned.