Principles of Reiki Just for today: Don't get angry (take it easy) Don’t worry Be grateful Work hard (meditative practice) Be kindly to others Dr. Mikao Usui These are the Five Reiki Principles, and they are so important and such an essential part of Reiki practice that they were written to Mikao Usui's memorial stone cliff. These Five Reiki Principles build a cornerstone of what is essentially a spiritual Reiki practice. All of Mikao Usui's teaching derived Reiki branches use these principles in any Form. It is believed that the five principles of Usui have been taken over by the Japanese Meiji Emperor , which Usui was a great admirer. Every day and every night, sit in the position of Gassho (hands folded in front of chest, also known as prayer position) and utters these words out loud in your heart.