Everyone experiences sadness at some point in their life, but not everyone experiences depression. Depression is extreme sadness and feeling discouragement, despair, or hopelessness from weeks to years at a time. People who experience depression often don't take enjoyment from life and don't have much energy, motivation, or concentration. With this volume, readers will learn what causes depression, steps to a diagnosis, and different types of treatments. They'll also learn that it's OK not to be OK, and that it's important to talk about feelings with people who are available to help.