What did Sai Baba mean when he told the author to 'do my service', and what were the promised results?

When Sai Baba told the author to "do my service," it was a multifaceted instruction for achieving ultimate well-being. As detailed in Chapter 3, this service was to be performed with devotion. The immediate, worldly promise was that his household would find happiness, his "plates are always full," and his calamities would be removed. On a deeper level, the service involved understanding Baba's true nature as the imperishable, all-pervading Self. By performing this service with the feeling that Baba is everywhere, the concepts of 'I' and 'mine' dissolve, leading to the cessation of all desires. The ultimate result promised was that "The God of Gods will have mercy, and an eternal treasure will be found."