Originally Posted by madeinuk
... has already been taught the value of delayed gratification and self control at home...
This phrase seemed a good spring-board or segue to emphasize that once they have learned the risks/rewards of delayed gratification and self-control, self-determining kids who are taking responsibility for their education may begin to choose when each strategy (wait vs GoForIt) may best serve their needs in different situations which present themselves.

Although self-determination may be expected to emerge in middle school as a milestone for NT development, some kids may exhibit this self-determination early on.

With marshmallows, delayed consumption may lead to larger reward. A student may be wise to choose wait/delay.
With education, delayed challenge may lead to underachievement. A student may be wise to choose GoForIt/challenge.