should he doubt his complete selling power? He knows there
is a _field for his goods_ in this territory. He knows clearly and
vividly _what ideas_ he wants to get across to the minds of prospective
buyers. He knows--most important of all--_just how_ to make convincing
and attractive impressions of the desirability and true value of what he
presents for purchase. He comprehends the _most effective ways_ to show
prospects both their _need_ for his goods and that he has come, with a
real purpose of service, to _satisfy_ that need.

You, the non-professional salesman of yourself, will sell _your_ "goods
of sale" with similar complete confidence in your power to gain and to
control your opportunities for success--if you, too, use the right
selling process.

This set of books explains and demonstrates in detail the principles and
methods of _the successful salesman of ideas_. The Introduction and
twelve Chapters of the present series apply the selling process
especially to _the sale of ideas about one's self_, with particular
relation to _self-advancement_ in the world. "The Selling Process,"
companion book to "Certain Success," shows the master _professional_
salesman at work, getting orders with _assurance_.

[Sidenote: Hard Study Necessary]

The fact that you have proceeded thus far in reading "Certain Success"
proves you have an earnest purpose to make the most of your present
opportunity to learn _how_ to succeed with certainty. We will assume
that you have developed your individual ability pretty fully, and that
you know where there is a field for such services as you are sure you
could render if afforded the chance. Surely, then, your ambition in
life, whatever it may be, is a sufficient incentive to the most thorough
study of the principles and methods of successful salesmanship. Do not
merely _read_ this set of books. MASTER "Certain Success" and "The
Selling Process" to make yourself the master of your own destiny.

Again and again, lest at any time while you study you migh