“You Can Do It if You Believe You Can!” BEFORE approaching the fundamental principles upon which this lesson is founded it will be of benefit to you to keep in mind the fact that it is practical – that it brings you the discoveries of more than twenty-five years of research-that it has the approval of the leading scientific men and women of the world who have tested every principle involved. Skepticism is the deadly enemy of progress and self-development. You might as well lay this book aside and stop right here as to approach this lesson with the feeling that it [ ... ]