Can you explain the concept of "discipline" as demonstrated in the story of the devotee and the Nath Bhagawat?

The concept of discipline, as illustrated in Chapter 18, is explicitly defined as the practice of regular reading. The narrator clarifies that one should not move from their place of regular worship without peacefully completing their study. This principle was enforced by Sai Baba when he ingeniously arranged for a devotee, who had been lazy that morning, to encounter the Nath Bhagawat at Shama's house. The book opened precisely to the page the devotee had skipped. This incident served as a powerful lesson, showing that Baba himself ensures his devotees adhere to their spiritual disciplines, using his divine orchestration to guide them back to their path.