If you are one of the millions of people who suffer from seasonal affective disorder (SAD), picking up this book is the first step toward feeling more energized, productive, and alive—all year long. Dr. Norman E. Rosenthal’s engaging, compassionate style and rich store of scientific wisdom have made this trusted guide a perennial bestseller. Dr. Rosenthal explains step by step how to evaluate your own level of seasonality, get the most out of light boxes, light visors, dawn simulators and other effective natural self-help options. The thoroughly updated fourth edition features a new chapter on different meditation practices and their benefits. Packed with information and insights, this is a tried-and-true survival kit for weathering the winter blues.