The first cause of insomnia problem is some incorrect sleeping behaviors. That is not the same sleep time. For example, some people sleep late night and wake up early or someday sleep early and wake up late. And the naps during daylight hours or before real sleep time. This behavior can make the body confused to know what time should sleep and not sleepy at night. However, people can solve this problem. People should have a schedule of bedtime by calculating time to sleep .And should follow it. That will make people who want to sleep and wake up on time. That becomes a regular sleep habits. People can practice by themselves. According to American association of Sleep Technology (2012) “Set the alarm for the same time each morning and get up then regardless of how much sleep you have had. This will allow your body to acquire a consistent sleep rhythm (p.460.)” Moreover, people should not nap during daytime or before real bed time. For training body sleep on Time.