What is the role of Sai Baba and the Guru in the completion of the Shri Sai Satcharitra's final chapter?

In Chapter 53, the role of Sai Baba and the Guru is portrayed as paramount and all-encompassing in the completion of the book. The author states that nothing happens by one's own will and that "Baba’s will is more powerful." Faced with the daunting task of writing the summary, the author prays for the Guru's grace, believing that the Guru's power can make the impossible possible. Ultimately, the author concludes that Sai, the "breaker of obstacles," will be the one to actually write the summary, and the author's mouth is "merely an instrument." This reinforces the theme that the entire work is a product of divine will, not human effort alone.