Based on Balasaheb Deo's experience, what can be inferred about the relationship between a devotee's personal effort and the Guru's grace in spiritual practice?

The story of Balasaheb Deo, found in Chapter 41, suggests a complex and essential relationship between personal effort and the Guru's grace. Deo demonstrated sincere personal effort; he had a 'great desire' and took a three-month leave to pursue his spiritual goal of reading the Dnyaneshwari. However, his efforts alone were fruitless, leading to superficial reading and a lack of inner love for the text. This implies that while a devotee's strong intent is necessary, it may not be sufficient. The narrative culminates in Deo's surrender, resolving to wait for Sai's command. This indicates that true spiritual progress and the overcoming of obstacles ultimately require the Guru's sanction and grace, which activates and gives meaning to the devotee's initial efforts.