idiom is used in psychological fields to describe serious mental health concerns.Most, if not all, people overthink certain things at some point in their life.
This habit, in itself, is not a mental health issue. But it’s often a symptom of mental health struggles. Worry, or overthinking, is a common symptom of generalized anxiety disorder.
Sometimes, it can even be a cause of anxiety. While you won’t develop an anxiety disorder because you overthink, you can become more anxious the more you worry.Read more on powerofpositivity.com