Cognitive therapy
http://mail.med.upenn.edu/~abeck/ psychology research depression. Written several books on depression. Cognitive therapy -- correcting cognitive distortions -- "...increasing patients' objectivity regarding their misinterpretations of situations or subjective sensations or feelings (cognitive distortions) and their negative expectancies,..." ... "This work demonstrates the capacity of psychiatrically ill patients to compensate for their biological and psychological vulnerabilities." http://www.beckinstitute.org/
Related: "Happiness isn't normal" Time Magazine, Feb 13, 2006
http://www.candleinthedark.com/beck.html list of cognitive distortions