But there is another fact in regard to habit which has an immense bearing on the well-being of our race. When a habit of seeking happiness in some one particular mode is once formed, the change of this habit becomes difficult just in proportion to the degree of repetition which has been practiced. A habit once formed, it is no longer an easy matter to choose between the mode of securing happiness chosen and another which the mind may be led to regard as much superior. Thus, in gratifying the appetite, a man may feel that his happiness is continually diminishing, and that, by sacrificing this passion, he may secure much greater enjoyment from another source; yet the force of habit is such that decisions of the will perpetually yield to its power. Thus, also, if a man has found his chief enjoyment in that admiration and applause of men so ardently desired, even after it has ceased to charm, and seems like emptiness and vanity, still, when nobler objects of pursuit are offered, the chains of habit bind him to his wonted path. Though he looks and longs for the one that his conscience and his intellect assure him is brightest and best, the conflict with bad habit ends in fatal defeat and ruin. It is true that every habit can be corrected and changed, but nothing requires greater firmness of purpose and energy of will; for it is not _one_ resolution of mind that can conquer habit: it must be a constant series of long-continued efforts. The influence of habit in reference to _emotions_ deserves special attention as having a direct influence upon character and happiness. All pleasurable emotions of mind, being grateful, are indulged and cherished, and are not weakened by repetition unless they become excessive. If the pleasures of sense are indulged beyond a certain extent, the bodily system is exhausted, and satiety is the consequence. If the love of power and admiration is indulged to excess, so as to become the leading purpose of life, they are found to be cloying. But within certain limits all pleasurable emotions do not seem to lessen in power by repetition.