Master Usui titled the Reiki Principles, The Secret Art of Inviting Happiness/The Miraculous Medicine of All Diseases. That double title is very fitting. The Principles are a guide to living that can brings us peace and contentment. When we attain the inner peace that comes with living life by the Principles, much of the inner turmoil that is at the core of our physical dis-ease will dissipate. Whereas hands on Reiki helps to treat dis-ease once it has set in, I have come to think of the Reiki Principles as preventative care. They help us to live in such a way that we can stay in alignment with a healthy and happy life, minimizing our chances of becoming ill in the first place.