Summarize the book.

In this emotionally-charged memoir, Kay Redfield Jamison recounts, not only her own struggles with manic-depressive illness, but also how she has been able to use her disease to treat others and crusade for better understanding of the illness. A professor of psychiatry at Johns Hopkins University School of Medicine, Jamison had learned to manage her disease and become a world expert on manic-depression by the age of forty.