People of today tend to think that only visible body is themselves and forget about mind. Because of this, people cannot use their own ability frilly and easy to fall in a minus way of thinking. Mind moves body. This is called Ki principles. To understand Ki principles and practice it in daily life, you will be able to use both mind and body correctly and change your mind to think plus way. Also, you can use your ability fully. In the first section, while delving deeply into the Ki principles, the author gives number of practical examples which anyone can easily follow. If the examples are followed correctly the reader can grasp a basic meaning of Ki. In part two of the book, the author gives detailed and concrete examples of how to apply the Ki principles to our daily lives. The author wishes that those who do not fully realize their own abilities will learn the full meaning of Ki. It is hoped that those who have learned the Ki principles will instill them in their hearts and help those around them walk a brighter and happier path.