Self-efficacy plays an important role in motivating behavior change. The present study implemented a self-efficacy enhancement procedure to examine its influence on hypnotic tapering. Twenty-four long-term hypnotic users underwent a self-efficacy enhancement procedure prior to undergoing a systematic gradual tapering program, and another 24 hypnotic users underwent the systematic tapering program only to serve as a control group. Self-efficacy in tapering off hypnotics was significantly increased following the self-efficacy enhancement procedure. The increase could predict the percentage of dosage reduction after controlling for baseline self-efficacy level. Further, patients in the self-efficacy enhancement group showed a greater percentage of dosage reduction than those in the control group. In terms of sleep parameters, the program resulted in shorter waking time after sleep onset than the control program, but did not show significant effects on the other sleep parameters. The findings support the facilitating effect of self-efficacy enhancement on hypnotic tapering.