Yoga is a gradual process of replacing our unconscious patterns of thought and behavior with new, more benign patterns that are expressive of the higher powers and virtues of enlightenment. It takes time to accomplish this far-reaching work of self-transformation, and therefore practitioners of Yoga must first and foremost practice patience. Enlightenment, or liberation, is not realized in a matter of days, weeks, or months. We must be willing to commit to an entire lifetime of yogic practice. There must be a basic impulse to grow, regardless of whether or not we will achieve liberation in this lifetime. It is one of Yoga's fundamental tenets that no effort is ever wasted; even the slightest attempt at transforming ourselves makes a difference. It is our patient cumulative effort that flowers into enlightenment sooner or later.

Georg Feuerstein in The Deeper Dimension of Yoga