What happens to a person's perspective when they receive the Guru's grace, as mentioned in Chapter 18?

According to Chapter 18, receiving the Guru's grace has a transformative effect on a person's mindset. The text states that if, by a stroke of good fortune, one falls within the Guru's grace, then the "false logic of 'mine' and 'thine'" completely disappears. This means that the divisive and dualistic thinking that separates people—seeing some as "ours" and others as "strangers"—finds no place in the heart of such a devotee. The Guru's grace helps dissolve the ego and its attachments, leading to a more unified and non-dual perspective on the world.