Although it is conventional wisdom that we learn most from failures and mistakes, for decades psychologists too have considered failures the most powerful learning sources. According to Thorndike's law of effect, negative outcomes that accompany failure serve as punishment, which increases the probability of adapted behavior in subsequent events. Furthermore, traditional attribution theories have posited that people who are capable of attributing failure to personal and controllable factors (e.g., limited effort) learn the most (Weiner, 2000).It is remarkable that scant research attention has been paid to the question of whether people want and are able to learn from their successes. Learning from successes not only is vital from a theoretical point of view but also has substantial practical relevance. For instance, in high-risk environments (e.g., hospitals, the nuclear power or aviation industries), failure can mean maiming, disability, and huge environmental, financial, societal, and psychological costs. Thus, it is key that people are also able to learn from their successes before disasters take place. Despite the motivational benefits successes may have (e.g., increased belief in one's competence; Hall, 1971), they also confirm prior expectancies and boost confidence in old routines, which causes restricted search and reduced attention, while increasing complacency and risk aversion (Sitkin, 1992;Zakay, Ellis, & Shevalsky, 2004).Our objective in this review was to highlight systematic reflection as an effective tool for learning from both failed and successful experiences. In the following section, we introduce systematic reflection as a learning procedure, after which we draw on a growing stream of findings that runs across different psychological domains to empirically substantiate its effectiveness. Subsequently, we review research that has sought to determine situational and person-based moderators that shape the effectiveness of systematic reflection. We end by discussing future research prospects.