Reiki self attunement made it possible for someone to become a complete reiki master all at one, without any waiting period, and without different levels. Some reiki masters under this concept also offering master course in just 48 hours.

Reiki self attunement is still quite controversial for some healers. Some healers believe that a healer must receive a reiki attunement from a competent reiki master, while others believe that reiki self attunement is possible. Those who believe that it is possible, believe that Dr. Mikao Usui, who is the founder of reiki, attuned himself during his meditation on Mount Kurama. This is quite logical, since he was all alone at that time.