Can you explain the concept of non-duality (Advaita) as it is presented in Chapter 6 through the grace of the Sadguru?

Chapter 6 delves into the profound spiritual concept of non-duality, or Advaita, and how the Sadguru facilitates this realization. The text explains that Sai Baba awakens the sense of 'I am He' (Soham) within the devotee, which is the core recognition of the self's identity with the divine. By revealing this innate bliss, He dissolves the devotee's sense of 'me and mine,' which is the foundation of dualistic thinking and ego. This process, as described in the chapter, manifests the harmony of non-duality right in the devotee's presence, showing that the ultimate spiritual goal is achievable through the Sadguru's grace.