Excerpts from The Unique Psychological World of Lawyers:
In his book, Authentic Happiness (Free Press, 2002), Dr. Seligman reviewed his research on whether any personality attributes were consistently correlated to success in any of 104 careers he studied. Interestingly enough, the only career he found consistent correlations for was lawyering. And the attribute? Pessimism. Pessimism was so highly correlated with success in lawyers that the higher the pessimism in law students, the higher their grades.