Atma Shiva Yoga is a complete 5 level system that directly accomplishes the union of the individual consciousness with the Universal Consciousness. This has always been the original goal of yoga since ancient times.
In Hinduism the Atma represents the individual or the Soul. Shiva represents the Divine or the Universe. Yoga is the union between the two.
Atma Shiva Yoga is the only system of Kriya Yoga where the Divine directly meditates the practitioner. You do not have to perform the meditation by your own effort. In Atma Shiva Yoga the Divine conducts the entire process.
Upon accomplishing the secret breath control sequence that is unique to Atma Shiva Yoga, the Divine directly enters the individual and begins the unique spiritual process that ultimately results in the merging of the Soul into the Supreme Soul. All the samskaras and negative mental impressions (vasanas) that the individual has accumulated dissolve, freeing one from all karmic obstructions. Atma Shiva Yoga goes one step ahead and also starts to fuse the divine with the individual soul. As the divine enters the consciousness of the individual only celestial light and deep abiding bliss is experienced. Shivoham, or the consciousness of “I am Shiva” becomes the Reality.