For routine jobs, you work harder and perform better because of your boss or peers’ presence. For more complex jobs, you have to search for another reason. You can make your job as “calling” or make it “challenging.” If you have ambition, you will work smarter.

What makes this research great? Because the researchers uses 241 studies consist of more than 23,000 subjects so it can eliminate individual bias.

What makes this research great? Because the researchers uses 70 years of study of same subjects to proof their arguments..

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