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

Chapter 17 identifies several internal hindrances to spiritual progress. It highlights that the desires for seen and unseen enjoyments, along with hope and cravings, are significant obstacles that must be uprooted. Furthermore, the chapter states that lust and anger are powerful tendencies that instantly disrupt the spiritual practices of listening, contemplation, and meditation, thereby preventing the attainment of knowledge. It also notes 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 with knowledge.