Picador, 1998. Paperback, 363 pages.

Beautifully written, this is a complex book that examines the biological and psycho-social factors that determine mood. It is not a self-help book but a digest of what an academic and clinical psychologist understands after 25 years of working with people who have mood disorder.

Was €17, now on special offer for €12 (including P&P within Ireland).