What is the spiritual principle illustrated by the story of Balasaheb Deo's difficulty with the Dnyaneshwari?

The story of Balasaheb Deo illustrates a key spiritual principle mentioned at the beginning of the narrative in Chapter 41. The text states that Sai Baba is particularly loving toward devotees who have a "true taste for spiritual matters" and that He helps them by "warding off all their difficulties." Deo's intense desire to read the Dnyaneshwari daily was his spiritual aspiration, but he faced internal obstacles that he couldn't overcome on his own. His story serves as an example of how a sincere devotee, upon failing through self-effort, ultimately places his faith entirely at the Guru's feet, trusting that only the Guru's grace can remove the obstacle and grant the ability to proceed on the spiritual path.