According to Chapter 10, what is the role of a Guru in a devotee's life, and how does this compare to other gods?

Chapter 10 emphasizes the supreme importance of the Guru in a devotee's spiritual journey. The text states that while all other gods are illusory, the Guru alone is the one eternal God. By placing complete faith in the Guru's feet, a devotee's destiny can be changed, as if a 'nail is struck over the lines of destiny.' The chapter further explains that the Sadguru acts as a boatman, guiding devoted bhaktas across the worldly ocean of existence (Bhavasagar) and helping them overcome the three types of miseries. Through the Guru's grace, the knots of the heart are broken and karmas are destroyed, leading to liberation.