Emotion regulation ability has a critical role in our physical and mental well-being. Strong emotion regulation capability is associated with academic success and life satisfaction. This capability also bolsters people’s psychological strength to bounce back from negative, challenging emotional experiences. Although interest in designing emotion regulation support technology has grown significantly in the past few years, much of the effort has been put into helping users to change their physiological responses to emotional episodes. Limited works have focused on designing a solution that equips users with the necessary “tools” that enable them to master their own emotions. Informed by theories in affective neuroscience, we propose to design a conversational agent that helps users regulate their emotions by identifying their true cause, labeling them with a wide range of emotion words, and gradually building up their emotional granularity. By acquiring more fine-grained emotion concepts, we expect users to have more clarity and flexibility in navigating their emotional experiences.