제목: Learned Optimism: How to Change Your Mind and Your Life저자: Martin E. P. SeligmanVintage; Reprint edition (January 3, 2006) v\:* {behavior:url(#default#VML);} o\:* {behavior:url(#default#VML);} w\:* {behavior:url(#default#VML);} .shape {behavior:url(#default#VML);} https://www.amazon.com/Learned-Optimism-Change-Your-Mind/dp/1400078393/ref=sr_1_1?s=books&ie=UTF8&qid=1535377443&sr=1-1&keywords=seligman+learned+optimism