To discipline one's life is not easy, even for those who are strong, severe with themselves, courageous and enduring.
Before trying to discipline one's whole life, one should at least try to discipline “one” activity, and persist until one succeeds. <ref>http://incarnateword.in/cwm/16/13-october-1963#p9</ref>
You must discipline the physical consciousness from within, and from within also will come the outer order of your physical life. <ref>http://incarnateword.in/cwm/17/8-september-1937#p2</ref>
Of all the domains of human consciousness, the physical is the one most completely governed by method, order, discipline, process. The lack of plasticity and receptivity in matter has to be replaced by a detailed organisation that is both precise and comprehensive...the body is a being of habits. But these habits should be controlled and disciplined, while remaining flexible enough to adapt themselves to circumstances and to the needs of the growth and development of the being. <ref>http://incarnateword.in/cwm/12/physical-education#p1</ref>
… a fundamental change of character demands an almost complete mastery over the subconscient and a very rigorous disciplining of whatever comes up from the inconscient, which, in ordinary natures, expresses itself as the effects of atavism and of the environment in which one was born. Only an almost abnormal growth of consciousness and the constant help of Grace can achieve this Herculean task. That is why this task has rarely been attempted and many famous teachers have declared it to be unrealisable and chimerical. Yet it is not unrealisable. The transformation of character has in fact been realised by means of a clear-sighted discipline and a perseverance so obstinate that nothing, not even the most persistent failures, can discourage it. <ref>http://incarnateword.in/cwm/12/vital-education#p5</ref>
It is a long and exacting labour requiring great patience and perfect sincerity, for without sincerity you will deceive yourself from the very outset, and all endeavour for progress will be in vain. With the collaboration of the vital no realisation seems impossible, no transformation impracticable. But the difficulty lies in securing this constant collaboration. The vital is a good worker, but most often it seeks its own satisfaction. If that is refused, totally or even partially, the vital gets vexed, sulks and goes on strike. Its energy disappears more or less completely and in its place leaves disgust for people and things, discouragement or revolt, depression and dissatisfaction. At such moments it is good to remain quiet and refuse to act; for these are the times when one does stupid things and in a few moments one can destroy or spoil the progress that has been made during months of regular effort. These crises are shorter and less dangerous for those who have established a contact with their psychic being which is sufficient to keep alive in them the flame of aspiration and the consciousness of the ideal to be realised. They can, with the help of this consciousness, deal with their vital as one deals with a rebellious child, with patience and perseverance, showing it the truth and light, endeavouring to convince it and awaken in it the goodwill which has been veiled for a time. By means of such patient intervention each crisis can be turned into a new progress, into one more step towards the goal. Progress may be slow, relapses may be frequent, but if a courageous will is maintained, one is sure to triumph one day and see all difficulties melt and vanish before the radiance of the truth-consciousness. <ref>http://incarnateword.in/cwm/12/the-science-of-living#p12</ref>
The student should not arrive half an hour late just because he is free, because this kind of freedom is not freedom, it is simply disorderliness. Each one must have a very strict discipline for himself. But a child is not capable of self-discipline, he must be taught the habit of discipline. So he should get up at the same time, get ready at the same time and go to school at the same time. That is indispensable; otherwise it becomes an impossible muddle. <ref>http://incarnateword.in/cwm/12/11-november-1967#p43</ref>
Example is the most powerful instructor. Never demand from a child an effort of discipline that you do not make yourself. Calm, equanimity, order, method, absence of useless words, ought to be constantly practised by the teacher if he wants to instil them into his pupils.
The teacher should always be punctual and come to the class a few minutes before it begins, always properly dressed. And above all, so that his students should never lie, he must never lie himself; so that his students should never lose their tempers, he should never lose his temper with them; and to have the right to say to them, “Rough play often ends in tears”, he should never raise his hand against any of them. <ref>http://incarnateword.in/cwm/12/discipline#p7</ref>
To prevent the students from being irregular, rude or negligent is obviously indispensable; unkind and harmful mischief cannot be tolerated.
That is why to be a teacher or an instructor is the best of all disciplines, if one knows how to comply with it. <ref>http://incarnateword.in/cwm/12/correspondence#p111,p112,p113,p114</ref>
You must create a discipline for yourself and impose it on yourself at all costs if you want to put an end to vital bad will and mental depressions. Without discipline one cannot do anything in life and all yoga is impossible. <ref>http://incarnateword.in/cwm/12/study#p32</ref>