According to the beginning of Chapter 6, what is the role of the Sadguru in a person's life, and what immediate feelings does the name 'Sai' evoke?

Chapter 6 establishes the Sadguru as the essential helmsman for the boat of life, emphasizing that only with the Guru's guidance can one successfully navigate both spiritual and worldly matters to reach the "far shore." The text states that the moment the word 'Sadguru' is uttered, the name Sai is the first to be remembered. He is visualized as standing right in front of the devotee, placing His blessing hand upon their head. As detailed in this chapter, this gesture, combined with Udi from the Dhuni, is said to cause the heart to overflow with self-bliss and bring tears of love to the eyes.