A sound mind is a well-organized mind in which a controlling idea is able to inhibit the opposites and is in no danger of being overrun by any chance intrusion into the mind. This power is the act of attention. An attention which is trained and disciplined can hold its ideas against chance impulses. An untrained attention is attracted by everything which is loud and shining, big and amusing. The trouble is not with the rush and hurry of the impressions which demand our attention; the trouble is with our attention which seeks a quick change of new and ever new impressions because it is not disciplined to hold firmly to one important interest. We want the hundred short-cut superficial magazines because we lack the energy to study one large volume; we want the thousand engagements because we are not concentrated enough to devote ourselves fully to one ideal task. The strong mind may find its sound adjustment even without such training for concentrated attention through obedience and discipline but the weak mind has to pay the penalty. For not a few it will mean social disaster. Yet our society is sufficiently adapted to this state so that it gives some good social chances to the superficial too, and this not only to the rich, but to those on every level. Only the nervous system cannot so easily be adjusted to the new regime. The loose interplay of the brain cells without the serious training of discipline must involve disorganization of the mind-brain system which may count often most powerfully in those spheres in which the mere needs of life are felt the least. There is only one great remedy: discipline, training for concentrated attention, for a work in submission of will to a steady purpose. And psychotherapeutic effort will often demand such a training for work rather than a reduction of work and rest.