Can you explain the philosophical concepts of 'Soham' and 'Advaita' as they are presented in Chapter 6 in relation to the Sadguru's grace?

Chapter 6 delves into the profound spiritual impact of the Sadguru's grace, touching upon key philosophical concepts. It states that Sai Baba awakens the sense of 'Soham' ('I am He'), which signifies the realization of the individual soul's identity with the universal consciousness. This awakening reveals a state of innate bliss. The chapter further explains that the Guru's grace dissolves the sense of 'me and mine,' which is the foundation of ego. This leads to the manifestation of the harmony of 'Advaita' or non-duality, a state where the perception of separateness between the self, the world, and God is completely erased.