How does Chapter 18 describe the Guru's method of instruction and the effect of His grace on a devotee?

Chapter 18 explains that the Guru's teaching method is tailored to the individual. It states that the Guru shows the true path to each person according to their worthiness, doing so "without creating even a bit of intellectual conflict." This implies a gentle, intuitive, and personalized guidance. Furthermore, the chapter highlights the transformative power of the Guru's grace. It mentions that if one is fortunate enough to fall within the Guru's grace, the false logic of "mine" and "thine" — the sense of separation between "us" and "them" — completely disappears, leading to a state of unity.