We have learned that t'shuva is the force which makes the world go round. Just as gravity keeps us here on earth, t'shuva keeps us longing for the heavens. For the individual, the source of this force lies in his or her willpower. The will is the battery of t'shuva. For a person to be healthy, happy, and in harmony with the universe, his will must be freed from the bondage of sin and directed toward goodness and G-d.
Because of its great power, Rabbi Kook warns that t'shuva, if misused, can become a lethal weapon. Like a surgical knife, t'shuva can be the key to new healthy life, or to self-destruction.