This hand-book of PROSPERITY was written from the basis, that thought is a substantial influence in the world like electricity, steam, heat and light. That man can control, direct, transform and dissipate his thoughts in the same way that he manipulates the forces that are evident to his five senses. If the man who takes this book has studied psychology and metaphysics from this viewpoint, he doubtless has had proof of this thought-power. If he has not, then let him approach this book with a fair mind willing to investigate and not to judge until all the evidence is in, and a thorough trial has been given to the practices and applications, recommended. In many cases, the simple perusal of the book will be sufficient to bring about a marked change for the better in one's affairs.