This volume is the second of a series, the first of which is "THE SCIENCE OF GETTING RICH." As that book is intended solely for those who want money, so this is for those who want health, and who want a practical guide and handbook, not a philosophical treatise. It is an instructor in the use of the universal Principle of Life, and my effort has been to explain the way in so plain and simple a fashion that the reader, though he may have given no previous study to New Thought or metaphysics, may readily follow it to perfect health.