Can you elaborate on the philosophical concepts of 'Soham' (I am He) and 'Advaita' (non-duality) as presented in Chapter 6?

Chapter 6 explains that the Sadguru's grace leads to profound spiritual realization. It states that Sai Baba awakens the sense of 'Soham,' which is the realization of the principle 'I am He,' signifying the unity of the individual soul with the universal consciousness. By revealing this innate bliss, He then dissolves the devotee's sense of 'me and mine'—the very foundation of ego and separateness. According to this chapter, this process culminates in manifesting the harmony of 'Advaita,' or non-duality, where the distinction between the self and the divine is completely erased, leading to a state of ultimate unity.