Everyone loves an optimist. A positive outlook is one of the most important traits we look for in friends, employees, leaders, and especially salespeople. We teach our kids that a can-do attitude is the key to success. And almost every self-help book starts with the mantra “You can do it!” (once you meditate, visualize what you want, and eliminate all forms of negativity). After all, positive thinking works wonders, right? We actualize what we visualize. Maybe and maybe not