I have just done a listening exercise with my ESL students on The Marshmallow Test … a 1960s experiment that offered four-year-olds one marshmallow off the bat, but an additional marshmallow if they could just wait alone in a room for 15 minutes with that first marshmallow and not eat it.
Astonishingly the findings over time showed that kids who could delay gratification for longer times at four, were likely to be more successful socially, educationally and professionally when they grew up than the kids who couldn’t wait and sucked that first marshmallow down as soon as they were alone with it.