If you consulted your business experience instead of your ugly individualistic philosophy, you would know that believing in himself is one of the commonest signs of a rotter. Actors who can’t act believe in themselves; and debtors who won’t pay. It would be much truer to say that a man will certainly fail because he believes in himself. Complete self-confidence is not merely a sin; complete self-confidence is a weakness. Believing utterly in one’s self is a hysterical and superstitious belief like believing in Joanna Southcote: the man who has it has ‘Hanwell’ written on his face as plain as it is written on that omnibus.” And to all this my friend the publisher made this very deep and effective reply, “Well, if a man is not to believe in himself, in what is he to believe?” After a long pause I replied, “I will go home and write a book in answer to that question.” This is the book that I have written in answer to it.