Success Depends Not Just on Passion But Grit and Intelligence too

Intelligence, grit and physical activity play a major influence in the success of an individual, according to a study done by Angela Duckworth of University of Pennsylvania, researchers at Duke University and United States Military Academy. Angela had studied the dropout rates of trainee cadets at West Point. After an extensive, two-year process, each cadet must complete a six-week initiation nicknamed Beast Barracks during the summer preceding classes. On average, three out of every 100 cadets drop out during this training. 
It was found that grittier people had less chance of dropping out of the course during a discouraging period of training. Cognitive ability is the best predictor for academic grades while grit and physical ability determine success in the physical programme. Ultimately it is not passion. Her message is that if you want to lead a happy, healthy and helpful life, it is necessary to cultivate as many aspects of one's character such as honesty, kindness, generosity and curiosity, and of course grit.