How does Chapter 10 describe the Sadguru's power to alter a devotee's fate and help them navigate life's challenges?

Chapter 10 powerfully illustrates the Sadguru's ability to intervene in a devotee's life. It makes the bold claim that by placing faith in the Guru's feet, He "strikes a nail over the lines of destiny," which means he can change one's fate. The text uses the analogy of a boatman to explain this further; just as one trusts a boatman to cross a worldly ocean, a devotee must trust the Guru to cross the ocean of existence (Bhavasagar). This chapter states that when the Sadguru becomes their boatman, devoted followers can overcome the three types of miseries—physical, mental, and divine—and their worldly existence (Samsara) is completely destroyed.