It really works! One of my favorite stress relievers is a book series, "Five Good Minutes" by Jeffrey Brantley, MD, and Wendy Millstine.
"Calm, focus and serenity are just five minutes away" promises the back of "Five Good Minutes: 100 Morning Practices to Help You Stay Calm and Focused All Day Long." (I pause so that those who actually have seen me all day long can enjoy their own jokes about how calm and focused I am. Well, I'm better than I would be without it!)
I use the morning, evening and work version of this series, and they are helpful. You can find out more about Dr. Brantley in this interview from PsychCentral by Elisa Goldstein here.
I've been through the morning and evening book several times. One favorite is Exercise 14: Push All the Right Buttons. First, you visualize a volume knob for your stressful thoughts, and then you turn it down. Then you visualize a button for instant calm, and you push it. Am I instantly tranquil? No. But I do feel better.
The books have dozens of exercises, often focused on paying attention to your inner life, that actually help. I do them regularly. It's easier than vibrating with worry or getting addicted to Xanax. Just try and see!