I went through cognitive therapy in late eighties when a series of miscarriages tipped me over into depression, not experienced so badly since being bullied at school, and the aftermath. I felt a "failure" all over again. I was lucky enough to get one to one therapy through Oxford University Dept of Psychology, but this book plus the Feeling Good therapy guide was required reading, and exercises set from it each week. For an intelligent person not able to get hands on therapy, the books alone would go a long way to help. But don't skip bits, take it very seriously, its a professional book, although seemingly written in a friendly, self-help formatt. I was told to re-read it frequently, which I do, to keep depression at bay. Like alcoholism, it can reoccur at intervals, but I always get out of it with this book. Also great at dealing with life's problems for anyone not seriously depressed, but needing to understand themselves, and cope with other people and everyday life.