How does Kakasaheb Dixit's story illustrate the idea that a Sadguru's grace is indispensable for spiritual attainment?

Kakasaheb Dixit's introduction to Sai Baba serves as a powerful illustration of the necessity of a Sadguru's grace. Chapter 51 begins by stating that 'without the grace of the Sadguru, one cannot encounter the Supreme Truth.' Dixit's personal experience validates this. He admits to having exhausted himself with spiritual practices, yet his mind remained unsteady and would 'slip away unnoticed.' His own efforts were insufficient. It was only through the catalyst of his friend Nana Chandorkar that he was guided toward Sai Baba. Dixit's decision to seek help for his 'lame mind' rather than his lame foot shows his recognition that only a Guru's intervention could solve his deepest spiritual problem, a longing for which, the text notes, Sai Baba feels 'great enthusiasm.'