According to Chapter 10, what is the role of a Sadguru like Sai Baba in a devotee's life?

Chapter 10 of the Shri Sai Satcharitra portrays the Sadguru as the ultimate guide and savior for a devotee. It states that by placing faith in the Guru's feet, He can alter one's destiny, a concept described as striking "a nail over the lines of destiny." The chapter further explains that the Sadguru acts as a boatman, skillfully guiding devotees across the turbulent ocean of worldly existence (Bhavasagar). When a devotee serves the Guru with purity, the three types of miseries—physical, mental, and divine—are overcome. Ultimately, the Sadguru is presented as the one who can effortlessly grant liberation and bliss, making the challenging spiritual path accessible through simple faith and devotion.