What does Chapter 10 say about the power of a Sadguru and the benefits of placing faith in Him?

Chapter 10 powerfully illustrates the role and significance of the Sadguru. It states that by placing faith in the Guru's feet, He can change one's destiny, metaphorically "striking a nail over the lines of destiny." The chapter explains that pure service to the Sadguru can completely destroy the worldly existence (Samsara) and help devotees overcome physical, mental, and divine miseries. The Sadguru is presented as a boatman who guides followers across the ocean of existence, granting knowledge and liberation (Moksha) effortlessly to those with sincere devotion and faith.