Increasingly, experts urge us to find balance and calm by looking inward--through mindfulness or meditation--and muting the outside world. But what if the natural vibrancy of our surroundings is actually our most renewable and easily accessible source of joy? In Joyful, designer Ingrid Fetell Lee explores how the seemingly mundane spaces and objects we interact with every day have surprising and powerful effects on our mood. Drawing on insights from neuroscience and psychology, she explains why one setting makes us feel anxious or competitive while another fosters acceptance and delight--and, most importantly, she reveals how we can harness the power of our surroundings to live fuller, healthier, and truly joyful lives.