At some point, if you're changing a really deep-seated behavior, you're going to have a moment of weakness.

Self-discipline has a bigger effect on academic performance than does intellectual talent.

Habits are malleable throughout your entire life.

If you want to do something that requires willpower - like going for a run after work - you have to conserve your willpower muscle during the day.

Simply giving employees a sense of agency- a feeling that they are in control, that they have genuine decision-making authority - can radically increase how much energy and focus they bring to their jobs.

There's a natural instinct embedded in friendship, a sympathy that makes us willing to fight for someone we like when they are treated unjustly.

But countless studies have shown that a cue and a reward, on their own, aren't enough for a new habit to last. Only when your brain starts expecting the reward--craving the endorphins or sense of accomplishment--will it become automatic to lace up your jogging shoes each morning. The cue, in addition to triggering a routine, must also trigger a craving for the reward to come.