Aric Prather, PhD, a psychiatry and behavioural sciences professor at UCSF, recently wrote for CNBC about improving sleep.
According to his research, rumination is the main cause of poor sleep. He believes nighttime worries have damaged his sleep.
Neuroscientists call these "bad thoughts and emotions" "salient"
There's no "magic switch" to halt rumination, but you can prevent it at night.
He claimed "during the day" is the best time to worry since "you have essential things" to do and can't "get stuck in mental loops."
This links in with Prather's first tip, which is to set aside 15 minutes in the afternoon to focus on "emotional anxiety." During this moment, he recommended being alone.