Brendon M Lemon

“The salespeople who scored in the top 10 percent for optimism performed a whopping 88 percent better in sales than the reps in the top 10 percent for pessimism. Dr. Seligman found that the power of optimism held in other professions, too. He concluded that in general, optimistic salespeople performed an impressive 20 to 40 percent better than pessimistic salespeople.”
― Vishen Lakhiani, The Code of the Extraordinary Mind: 10 Unconventional Laws to Redefine Your Life and Succeed On Your Own Terms