When second and third graders in a Seattle school are getting upset, they’re told to think of a traffic signal. Red light means stop—calm down. Take a long, deep breath and as you calm down a bit, tell yourself what the problem is and how you feel. The yellow light reminds them to slow down and think of several possible ways they might solve the problem, then choose which is best. The green light signals them to try out that plan, and see how it works.
From Focus: The Hidden Driver of Excellence by Daniel Goleman