At age twenty-four, Matt Haig found himself paralyzed by depression, standing at the edge of a cliff, contemplating suicide. But, after years of struggle, he overcame his illness, and now he writes to remind us that however low we might sink, the bottom of the valley never provides the clearest view, time does heal, and there really is light at the end of the tunnel. This is the story of his triumph over depression, and how reading, writing, and the love of his family and his girlfriend (who is now his wife) helped him along the way. But even more that that, it is a life-saving, funny, and heartwarming guide to appreciating every moment of being alive.