How can one tell a bona-fide guru from a fake one?
The guru’s qualification is that he delivers the message of God, as set down in the scriptures and the tradition, without alteration or adulteration. He has to be saintly in character, and coming from a succession of spiritual masters originating right from God. Perhaps most important of all, what he says must work. By following his instructions, one must develop love of God. One must feel himself becoming detached from the material concept of life and get more and more attached to spiritual life. The symptom of a real medicine is, the fever must go down and healthiness must improve.