Practo user, Delayed sleep onset can occur due to multiple reasons and only curing the sleep problem wont be that helpful. I recommend you consult a psychiatrist for detailed evaluation and treatment. Delayed sleep onset can be prevented by: - sleeping in a quiet, dark and cool room -avoid watching tv while falling asleep -avoid coffee, tea , tobacco and cigarette before sleep -avoid heavy meal before sleeping -avoid vigorous exercise before sleeping -avoid seeing clock/time again and again whilst lying in bed