According to the provided text, what is the relationship between ego, surrender, and receiving Sai Baba's grace?

Chapter 2 explicitly details the relationship between ego and divine grace. Sai Baba's condition for writing his own story through the author was, "He should dissolve his ego and surrender it at my feet." To one who achieves this, Sai promises not only full assistance with the specific task but also to "serve in all ways in his home." The text suggests that when the human ego is completely removed, the divine 'I-ness' can take its place and operate directly. This implies that surrendering one's personal pride and sense of self as the doer is the primary key to unlocking Sai Baba's complete help and service in all aspects of life.