How does Chapter 6 describe the importance of having a Sadguru in one's life?

Chapter 6 of the Shri Sai Satcharitra powerfully illustrates the importance of a Sadguru, describing them as the essential "helmsman" for the boat of life, ensuring it safely reaches the shore in both worldly and spiritual matters. The text states that the very mention of the word 'Sadguru' brings Sai Baba to the forefront of the mind, who then places His blessing hand on the devotee's head. As highlighted in this chapter, this divine gesture, often accompanied by Udi, fills the heart with bliss, purifies the soul, and provides unwavering guidance, demonstrating that a Sadguru's grace is indispensable for a successful life journey.