Many with insomnia feel “wired but tired”. They feel tired, but their brains simply won’t calm down and allow them to sleep. Some are kept awake by stressful thoughts, other by neutral of even positive thoughs. This problem suggest that the sleep drive, the “hunger for sleep” is not strong enough to overcome the alerting effects of thoughts. Restricting time in bed to build up a strong sleep drive may allow you to overcome racing thoughts.