You are lying in bed, or sitting at your desk, and your thoughts keep going. Tomorrow's meeting, an awkward comment from three years ago, whether you locked the door. If your mind won't stop thinking , it is usually a sign that your brain and body are still in a state of alertness, not a sign that something is broken. Common reasons include stress, unfinished tasks, too much stimulation, poor sleep, and sometimes an underlying condition such as anxiety. Most people can ease it with small, consistent habits. If it is severe or lasting, it is worth talking to a professional. The rest of this guide covers what is likely going on, how to tell the common causes apart, and what you can try. What "My Mind Won't Stop Thinking" Actually Means People use this phrase for a few different experiences, and they don't all call for the same response. Racing thoughts: fast, jumping, hard-to-follow thinking. Rumination: going over the same past event or problem again an...