According to Evelyn Underhill's unsurpassed classic, Mysticism: A Study in the Nature and Development of Man's Spiritual Consciousness, there are basically 5-stages along the mystic way: 1- The Awakening of the Self; 2- The Purification of the Self; 3- The Illumination of the Self; 4- The Dark Night of the Soul; &, its culmination, 5- The Unitive Life; while, Sri Aurobindo's synopsis in his magnum opus, The Life Divine, is based on the Supramental Transformation:
The animal is a laboratory in which she has worked out man; man may be a laboratory in which she wills to work out the superman, the being of a divine nature.
Meditation which is so vital and integral in Yoga is, essentially, opening up to a Higher Force, a higher power. As this more and more comes into being the Divine Shakti (Force) will begin to take over, will gradually transform one's whole being from its gross nature to a more refined, subtle form. Being ever-increasingly open is a prerequisite to ascend to the next level of consciousness or being... This Purification process may be a neverending, grueling passage from Purgation to Illumination following an Awakening experience; however, remaining unattached for this third- stage level, Illumination (Beatific Vision, Cosmic Consciousness), to be only a turning point and not anything definiitive, final, by any means. The Dark Night, consequently, will follow before the Unitive phase (The Father & I are one) can be a living, vibrant reality. And how long it will take is too complex to even speculate, but it would certainly be propitious for writing, working out experientially in documentary form; perhaps, left for anyone who can benefit from another pilgrim's lonely, assiduous ascent to Knowledge - Truth - Power - Love.
Our new vision, on the contrary, is the divinization of Life, the transformation of the material into a divine world... What has happened is truly a new thing: A New World Has Been Born. It is not the old that is being transformed, it is quite a new world that has been really concretely born... At the present hour we are in the very heart of a period of transition, where the two are intertwined; the old persists, still all-powerful, continues to dominate the ordinary consciousness, while the new glides in, still modest, unnoticed to the extent that for the moment it disturbs nothing much externally, and even in the consciousness of most people it is quite imperceptible. And yet it works, it grows till the moment when it will be strong enough to impose itself visibly.... at the summit of all that (Overmental, the age of the gods, age of religions), as an effort towards a still higher realization, was born this idea of the unity of religions, of something that is unique, which is behind all manifestation - and this idea was really the ceiling of human aspiration... But for that (one must come out of the overmental creation and seize the new; cosmic consciousness -> the Unitive Life, Supermind, Supramental Yoga), the new creation, the supramental creation must have taken place...
- (Robert McDermott, ed., The Essential Aurobindo)
...the final leap to a New World, a New Man - the supramental transformation and creation!