Hypnosis is something used to treat anxiety disorders

The induction of a state of consciousness in which a person apparently loses the power of voluntary action and is highly responsive to suggestion or direction. Its use in therapy, typically to recover suppressed memories or to allow modification of behavior by suggestion, has been revived but is still controversial.

Hypnotherapy -- or hypnosis -- is a type of nonstandard or "complementary and alternative medicine" treatment that uses guided relaxation, intense concentration, and focused attention to achieve a heightened state of awareness that is sometimes called a trance. The person's attention is so focused while in this state that anything going on around the person is temporarily blocked out or ignored. In this naturally occurring state, a person may focus his or her attention -- with the help of a trained therapist -- on specific thoughts or tasks.

Iwould say being around others who are not drug free is the wrong step because your peers are likely to influence any new or past habits