Not just IQ: "A study from the University of Minnesota, recently published in Proceedings of the National Academy of Sciences (PNAS), found that conscientiousness — a family of personality traits that combines being disciplined, focused, tenacious, organized and responsible — is the personality trait that best predicts work-related success across the board in life. This includes everything from performing well at work, to managing work-life balance, to being successful in training and learning, and even leading a happier life."

https://twin-cities.umn.edu/news-events/conscientiousness-to...