Interesting reading about the psychology of happiness. Particularly the parts about hedonic reversal, peak-end effect, and learned helplessness.
http://happierhuman.com/happopedia/#Learned_Helplessness
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This is a wonderful description/comic of the author's depression and a glimmer of hope.
http://hyperboleandahalf.blogspot.com/2013/05/depression-part-two.html
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Poignant cartoon about depressed people
http://threewordphrase.com/surgery.htm
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