The 5×5 rule for worry

In 10% Happier, Dan Harris talks about the "is this useful?" rule for worry. When you catch yourself worrying, ask yourself if that worrying is useful. And sometimes worrying is useful. Worrying about a presentation makes you spend more time practicing. But when the worrying stops being useful, cut that crap out. Of course, that's easy to say. Stop worrying. Oh, thanks fartface. So I like the 5x5 rule because it gives it a condition and a deadline, which is a brilliant abuse of Parkinson's Law...