This study will test whether adding a working memory training and motivational enhancement component to a standard, evidence-based cognitive behavioral therapy-based smoking cessation program (SCP) can improve treatment adherence and successful quit rates. This study will compare 5 sessions of SCP with an additional wellness-focused component (control intervention) to SCP incorporating motivational enhancement and working memory training ("enhanced" intervention). Participants will be adult smokers recruited from the greater Boston community who are interested in quitting smoking. This study will determine the efficacy, acceptability, and feasibility of the enhanced intervention.