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It's just as you've always suspected: Acting like a jerk is actually good for your career. According to a new study, "agreeable" people earn less. And as for all those claims that women are condemned for bitchy behavior in the office whereas men get away with it: It's all true! Neuroticism, defined as being "tense, anxious or moody," has a negative influence on women's earnings, but has no such effect on men's. So go ahead and start off the year the right way: Avoid being pleasant to anyone, and if you're male, take inspiration from some of the masters and give free reign to your most temperamental inpulses.