This is based on observable results through the Torah and the Twelve Steps approach. That is the twelve steps as exactly practiced as was done in early AA text, nicknamed the Big Book. This is not a theory or philosophy, it is an experience far deeper than any therapy, it is based on Divine Providence resulting in a complete psychic/personality change thereby healing the addict mind. Addiction is primarily a spiritual malady, thus we are talking of a spiritual solution, requiring ego deflation, moral inventory, confession of wrongs, and selfless service to Hashem in order to help others recover also. The core problem is an addict is existentially discomforted, empty and alone. Drugs provides a pseudo-spiritual solution, a false sense of connection, wholeness and there is absolutely nothing in this world nor any human therapy that can solve this, only a genuine spiritual experience, a Higher Therapy if you like. Drugs replace the essential need for a conscious connection to our Creator.