These lessons in self-development were planned to meet the requirements of men and women desirous of achieving the highest possible success in business or professional life. Their simple and direct style will strongly appeal to those who seek practical and immediate results. In order to secure the best results from these lessons, they should not only be read and studied, but regularly applied in daily life. The measure of the student's diligence and earnestness in these respects will be the measure of his progress.