Based on the provided text, what was Sai Baba's mission in Shirdi and what were his habits in his early days?

According to the excerpts from Chapter 39, Sai Baba's mission in Shirdi was one of spiritual upliftment for all. The text clarifies that he came of his own accord out of great concern for his devotees, particularly to uplift 'the dull-witted, the fallen, and the poor, those without vows, penance, or sacraments—simple and faithful people.' As for his early habits, the chapter mentions that at the age of eighteen, he was accustomed to solitude. He would sleep anywhere at night without any fear, a practice rooted in his profound spiritual realization that he 'saw the Lord everywhere,' indicating a state of non-duality and fearlessness from a young age.