Individuals with disordered eating often feel ambivalent about making changes to their eating because their current eating behaviours are rewarding in some way or serve important functions in their lives. For example, binge eating and emotional overeating are sometimes used to provide comfort, escape anxiety, or alleviate boredom. In the Healthy Eating and Lifestyle (HEAL) Lab, we are in interested in the impact of readiness for change on treatment outcome, and well as treatment approaches aimed at resolving ambivalence and enhancing readiness for change. Previous studies conducted by our group have examined the impact of an intervention called motivational interviewing on binge eating. Current studies are examining the impact of bariatric (weight loss) surgery on self-efficacy (i.e., confidence in one’s ability to follow dietary guidelines), and the impact of motivational interviewing on bariatric surgery patients’ ability to adhere to dietary guidelines following surgery.