Not worrying about anything is everything

Story highlights

  • Useless worry is detrimental to our overall mental and physical well-being
  • A simple exercise will help you learn whether you're worrying needlessly

This essay is part of a column called The Wisdom Project by David Allan, editorial director of CNN Health and Wellness. The series is on applying to one's life the wisdom and philosophy found everywhere, from ancient texts to pop culture. You can follow David at @davidgallan. Don't miss another Wisdom Project column; subscribe here.

(CNN)The plot of my only recurring nightmare goes like this: I'm back in college and have not attended one of my classes all semester (usually math or science), and now a final exam is imminent.

I'm completely unprepared, time has run out, and I don't even recall where the classroom is, so I can't find the professor. I wake up without a resolution.