The conditions you rebuild in your body will be those you most systematically concentrate on. Your every thought produces a chemical change in the blood which is carrying nourishment to every part of your body. So when your entire mental and physical force is focused upon an ideal of youth and beauty, as previously described, a physiological change takes place in your nerves and blood, which corresponds with your mental image or conception.

If you desire to live one hundred years, and, at the end of that time still possess glowing health and beauty, it becomes your duty to concentrate your attention at every possible opportunity upon your desire.

The plan I am instructing you to follow is to persistently hold the desired ideal in your brain until it becomes your normal attitude to look for and expect a constant and continuous realization of youth and power. In a short time, the habit will be formed and then no special effort on your part will be needed, for the desire will be a natural part of yourself. When that point is reached, success is assured.

When you first practice these exercises your existing ideas, opinions and thoughts may to a certain extent conflict. This is but natural, because the thoughts we have entertained are a part of us until new thoughts replace them. You have for so long expected the advance of weakness, sickness and death that it will be a little difficult at first to drop these thoughts and expect renewed youth and life to manifest itself. The difficulty you experience in making this change will prove to you to what extent thoughts control us and shape our actions. When the new ideas shall have taken as firm a hold as the old ones now have, your life will be correspondingly changed.

If you are earnest and faithful in practicing the rules and exercises given in these lessons, you will accomplish results much more quickly. Do not expect to change in a week or a month that which you have taken years to build. Your progress will start slowly but will increase more rapidly each month. For each month you will have a greater number of new cells to help you in changing and correcting the old forms. The more years you live, the more perfect you will become.

I honestly believe that where this plan is persistently and continuously carried out, there will be no limit to the number of years a person can live.

If you had previously expected to die of old age or disease at sixty, seventy or eighty, these expectations will be destroyed and in their place will grow a full confidence that your youth will be prolonged to the century mark.

To elevate yourself above the misconceptions of life that are held by a majority of the race, you must pa y strict attention to the practice of concentration. Although so many people believe so firmly in premature old age, your will and mind will become so positive, as a result of following these instructions, that their thoughts will be unable to influence or affect you. It is the people who lack the ability and do not concentrate their forces who become slaves to the negative thoughts of others. Such people are always lacking in originality, creative and constructive ability and never succeed. Those who concentrate their thoughts and forces always excel in their particular line of endeavor.

No one can derive the full benefits from any system of physical culture, if he has not learned to concentrate. This is demonstrated conclusively by the fact that the muscles become much firmer and more perfectly developed when the exercises are taken before a large mirror where the body can be seen, admired and the gradual improvement noted and concentrated upon, than when the same exercises are taken in the ordinary method of monotonous routine.

As our lives are controlled and directed by the things we think of and concentrate upon, it becomes necessary that you, being a student of longevity, concentrate your thoughts upon health-giving ideals. Concentrate upon those things which give renewed life and power. Concentrate upon literature which contains suggestions of health and unfoldment. Do not waste time and energy, nor risk your health by thinking f the suggestions of disease, pain and misery that are made so prominent a feature of the patent medicine advertisements in the papers and magazines of the coun try. Many sensitive persons actually make themselves sick by continuously reading the symptoms of disease that are graphically and suggestively described in these cunningly worded inducements. There is reason:o believe that the purpose of many such advertisers is to first create or at least aggravate the disease by their detrimental suggestions, and then charge a high price for merely attempting to cure the conditions they produced. I advise you, therefore, to avoid reading these deadly suggestions and devote your time to literature that creates health.

Concentrate your thoughts upon the happiest conditions you can possibly conceive, for this means an increase of health and vital force. Study the outlines and learn to admire beautiful statuary, for it will give you a more definite model to rebuild your body after. Associate with cheerful, pure minded people, for their presence and conversation will help you to entertain correct ideas. These may seem simple rules, but they are nevertheless of great importance in shaping your future.

Some people have acquired the habit of concentrating upon morbid themes and events. A funeral interests them more than the innocent enjoyments of the children, the song of the birds or the beauties of Nature. They prefer a walk in the cemetery to one in the park or country fields. If you have this tendency, it must be corrected, for such thoughts are devitalizing, health destroying and death producing. Concentrate your thought upon healthy, growing children, unfolding flowers and plants, beautiful trees, singing birds, running brooks, surging streams and the mighty ocean, for they all represent life. Take an interest in everything that elevates life. The flowing stream is perpetually renewed, while the stagnant pond lies inactive and creates death. What you want is abundant life and activity renewed from the flowing stream of perpetual life. By interesting yourself in children, you absorb the spirit of growth, innocence and sunshine. To the extent that you become imbued with the childlike spirit of fun and activity you succeed in renewing your youth and in acquiring youthful characteristics.

Another important rule for the preservation of health and the attainment of longevity is to have a definite purpose in life; be continually interested in something. By taking an active interest in some line of work, you make life worth the living. By so doing, you gain the vitality to prolong life.

It is a custom for men when they reach a certain age to retire from active business, providing they have made enough money to keep them for the remainder of their lives. When a man ceases to hold interests that require his attention, his vital organs also commence to retire from activity, and, as a consequence, it is not long before he is both physically and mentally weakened. Life and activity are synonymous and as soon as we cease to use any organ or set of muscles, they waste away and are not renewed.

I do not mean that a man must unceasingly work and acquire money, but that when he retires from his business life he must have other interests to concentrate his attention upon. This is the only way by which he can keep up the renewal of the brain forces. To sum the matter up, you must, if you want health, youth, power, success, talent, attractiveness and a hundred or more years of perfect life, proceed at once to make yourself a man or woman of force by practicing the unfailing key - Concentration.