Raj Yoga encourages no sham, requires no physical postures. It has to deal with the inner man whose sphere lies in the world of thought. To have the highest ideal placed before oneself and strive incessantly to rise up to it, is the only true concentration recognized by Esoteric Philosophy which deals with the inner world of noumena, not the outer shell of phenomena.
The first requisite for it is thorough purity of heart. Well might the student of Occultism say, with Zoroaster, that purity of thought, purity of word, and purity of deed - these are the essentials of one who would rise above the ordinary level and join the "gods." A cultivation of the feeling of unselfish philanthropy is the path which has to be traversed for that purpose. For it is that alone which will lead to Universal Love, the realization of which constitutes the progress towards deliverance from the chains forged by Maya around the Ego.
The Philosophy and Science of Vedantic Raja Yoga