Nostalgia, a sentimental longing for the past, is a common, universal, and highly social emotional experience. Nostalgic reverie is centered around the self, important social connections, and personally meaningful life events. In other words, when people bring to mind memories that make them nostalgic, they are revisiting personally meaningful life events shared with loved ones. A growing body of research positions nostalgia as a psychological resource with self-regulatory implications. Negative affective states such as sadness, loneliness, and meaninglessness trigger nostalgia and nostalgia, in turn, enhances well-being, feelings of social connectedness, and perceptions of meaning in life.