An extremely well written book about depression. It helps a reader understand the experience of depression from a superb story teller. The author also has a gripping TED talk.
A psychiatrist's story of bi-polar disorder, a very well written personal memoir. It gives a good feeling of the highs of Mania as well as the lows of depression.
An engineering manual for laymen on bi-polar disorder. This is a great book if you'd like to understand the current medical knowledge around bi-polar disorder, as well as what you can do to for yourself and your loved ones.