This is where a Master can be very helpful. Osho had become enlightened at the age of 21 whilst still a student of philosophy at University. A sannyasin , Sw Anand Neeten (Pierre Evald) , has conducted a lot of field research on Osho`s early life in Northern India and has discovered a paper with notes in Hindi on chakras, the different stages of samadhi etc that Osho wrote as part of his post graduate studies for his M.A. at Sagar University, M.P. circa 1955-57. He had kept quite about his enlightenment for ten years, unless someone suspected something and asked him about it, and then he had always asked them to keep it secret. Apparently he did organise a small meditation group in his university at some point when he was a professor.