Interpersonal relationships are integral to meaning and fulfillment in our lives, but they can also be the cause of distress when problems with communication, interpretation and expectations arise. How successfully a person builds connections with families, friends, romantic partners, work colleagues and others is closely related to his or her happiness and ability to function well in different social settings. A number of issues can derail someone’s ability to form and maintain healthy relationships, including problems with emotional and impulse regulation, maladaptive patterns of thinking and behaving, and personality disorders. Without effective intervention, these issues can lead to negative patterns of interaction that emerge repeatedly in one’s personal and professional relationships. Cognitive behavioural therapy functions to address the underlying causes of interpersonal difficulties and to help clients build the social and emotional intelligence they need to cultivate balanced and healthy relationships.