Self-control is the Key to Success

The Virtue of Self-Control

Around 1970, psychologist Walter Mischel launched a classic experiment. He left a succession of 4-year-olds in a room with a bell and a marshmallow. If they rang the bell, he would come back and they could eat the marshmallow. If, however, they didn't ring the bell and waited for him to come back on his own, they could then have two marshmallows.