How does Chapter 18 describe the experience of approaching a Sadguru and the nature of their grace?

Chapter 18 uses a powerful analogy to describe the experience of approaching a Sadguru, comparing it to a salt doll entering the ocean to bathe. Just as the doll dissolves and can never return, a devotee who approaches the Guru is completely absorbed and transformed. This chapter also explains that if one is fortunate enough to fall within the Guru's grace, the divisive and false logic of "mine" and "thine" completely disappears. The Guru's grace eliminates the illusion of separation, as highlighted in the opening sections of Chapter 18.