A new paper finds that your philosophic beliefs matter for your real world performance, or at least they predict it:
Do philosophic views affect job performance? The authors found that possessing a belief in free will predicted better career attitudes and actual job performance. The effect of free will beliefs on job performance indicators were over and above well-established predictors such as conscientiousness, locus of control, and Protestant work ethic.
The pointer comes from Vaughn Bell on Twitter. One interpretation is that a "belief in free will" corresponds to private information about the likelihood of being successful, and wanting to take credit for that success. A second interpretation is that the belief itself makes you more successful, by encouraging you to take responsibility for your choices.