The influence of behavioral patterns or sleeping environment on the quality and quantity of sleep. Persons with insomnia not caused by a known disease may find that the following may assist in obtaining a good night’s sleep: establishing a routine time to go to bed; avoiding trying to sleep; using practices that assist in going to sleep such as reading, watching television, or listening to music; sleeping in a dark room, free of noise; and avoiding caffeine and excessive food or drink before bedtime.