What does Chapter 10 say about the power of a Guru to change a person's life and destiny?

Chapter 10 of the Shri Sai Satcharitra extensively details the transformative power of a Sadguru. It states that by placing faith in the Guru's feet, He can "strike a nail over the lines of destiny," effectively changing one's fate. The chapter further elaborates that pure service to the Sadguru completely destroys the worldly existence (Samsara) and helps devotees cross over the three types of miseries. By the Guru's sight alone, attachments vanish, and both accumulated and current karmas are destroyed, leading the devotee effortlessly towards liberation.