I would like to think The Reiki Sourcebook helped people understand the system of Reiki from a Japanese perspective, and that creating language for it, the Three Diamonds, Sanmitsu, and the five elements of the system, has been the biggest shift. People now understand that it is a system, made of the precepts, meditations, hands-on healing, symbols and mantras, and Reiju, and that you have to practise it to get more from it.

The system of Reiki is Japanese, and that is the difference. It rests on Japanese ideas: Sanmitsu, the three elements the body and its workings are understood through, and the hara, the deep belly as the foundation of our energy. The purpose is also particular: Reiki means spiritual energy, and the practice is about remembering that we are made of it and live inside it, and letting go into that. Other systems come from other places and have other aims; I cannot speak for them.