Smoking is one of the most common addictions with devastating biopsychosocial consequences. Both medical treatment and pschotherapy are utilized in smoking cessation. Acceptance and commitment therapy holds the notion that smoking cessation rates are determined not so much by the negative affect and withdrawal symptoms per se, but by the avoidant and inflexible responding style. Acceptance and commitment therapy, through targeting the avoidance of internal stimuli and concomitant inflexible responding pattern, has yielded successful results. This article presents application of acceptance and commitment therapy step by step to a chronic smoker who quitted smoking at the end of therapy sessions.