People are often surprised that a psychologist can help with sleep. I had someone last month say, “I’ve visited nearly every other doctor, and a sleep psychologist was never mentioned.” Not only was this their last stop on the journey to finding remedies for their insomnia, but it was also the only treatment that improved their sleep. Insomnia affects about 33% of the U.S. population, that’s about one in three people. If you did your own research, you’d probably find similar stories in your own life. You might find people describing difficulty with sleep in various ways. So, what exactly is insomnia?