What is the Guru's role in guiding a disciple, and what is required from the devotee's side to achieve spiritual progress?

According to the wisdom in Chapter 19, the Guru's role is to show the way, with God as the ultimate, incomprehensible protector. However, progress is a two-way street. A significant barrier is the sense of difference, the 'I and Thou' mentality, which acts as a wall between the Guru and the disciple. Tearing down this wall is essential for reaching a state of non-duality. The disciple must surrender with an undivided heart and be alert to their duties. The text emphasizes that while one may have great wisdom and faith, gaining Guru-strength like Sai's requires strong fortune and dedicated, undivided attention from the devotee.