Man can bore a diamond with a bristle; he can tie an infatuated elephant with a slender silken thread; he can exercise his ingenuity and through the instrumentality of a mirror bring down the moon for the play of the child; he can make the flame of fire burn always downwards; but it is difficult for him to establish a control over his own mind. For gaining mastery over the mind, he has to know what the mind is, how it works, how it deceives him at every turn and by which methods it can be subdued. As long as the mind restlessly wanders about amidst objects, ever fluctuating, excited, agitated and uncontrolled, the true joy of the Self cannot be realised and enjoyed. To control the restless mind and bring, all thoughts and cravings to a stillness and sublimation, is the greatest problem of man. If he has subjugated the mind, he may be said to be, in his subjective freedom and power, the Emperor of emperors.
In introspection the mind itself is the subject of study. A portion of the mind studies the remaining portion of the mind. The higher mind analyses the processes of the lower mind. Introspection is a perception. Just as we watch the work done by a coolie, a portion of the mind watches the movements of the rest of the mind. By a careful watch and vigilance, many defects are detected and removed; by suitable spiritual discipline and Sadhana, the mind comes within one’s easy control. We need to seek out and utilise an environment which is conducive to calming the mind, and making its higher enlightened activity possible. We must watch the mind carefully and through subjective introspection find out what the mind is engaged with at a particular time and occasion.