In all of these different contexts, one characteristic emerged as a predictor for success. It wasn't social intelligence, good looks, IQ, or physical health. It was "grit," which the dictionary also defines as "mentally toughness."
Duckworth describes this quality in successful people as "perseverance and passion to achieve long-term goals; having stamina; sticking with your future day in and day out and working hard to make that future a reality; a marathon not a sprint.”
Her studies have shown that there is a correlation between mental toughness and self-control. To achieve those long-term goals there are things mentally tough people avoid. Here are seven of those:
Via The Learning Factor, Ricard Lloria