For over a decade, this image-based technique has helped people switch off their busy brains and fall asleep at night. How exactly does it play upon the mind?

This is now my go-to method for soothing nighttime anxiety — here's how to do it ...

(CNN) — When Dr. Luc Beaudoin was an undergraduate student nearly 40 years ago, he often had trouble falling asleep on Sunday nights and was eager to find a solution. “I thought to myself: If I can ...