We are all dwellers in two kingdoms, the inner kingdom, the kingdom of the mind and spirit, and the outer kingdom of the body and the physical universe about us. In the former, the kingdom of the unseen, lie the silent, subtle forces that are continually determining, and with exact precision, the conditions of the latter. Our prevailing thoughts and emotions determine, and with absolute accuracy, the prevailing conditions of our outward, material life, and likewise the prevailing conditions of our bodily life. If we want to have any conditions different in the latter we must first make the necessary changes in the former. To strike the right balance in life is one of the supreme essentials of all successful living. This book teaches us how to do so.