.people of any age and status are able to perform it
Writing three good things a day" is easy. Anyone can find time to do it - even the most busy" person. Because of this, it allows people to perform it on a daily basis without stopping, which keeps the continuity that makes it possible to improve happiness. In addition, this is an intervention that any person can do, children and adults, rich and poor. Does not require
.special means and is possible anywhere in the world
In conclusion, "Writing Three Good Things" is an intervention with many advantages.