An estimated 43 percent of adults say stressful thoughts keep them up at night, according to a recent poll by the American Psychological Association. If that sounds like you, try keeping a notebook by your bedside, advises Frisca Yan-Go, MD, a clinical neurologist at the UCLA Sleep Disorders Center
. When the wheels start spinning—did you remember to pay the water bill? are you ready for that meeting? what did your daughter mean by that comment at dinner?—just write down your concerns. When you articulate those persistent thoughts, you can usually clear your mind of them, says Yan-Go, and, as a result, rest peacefully.