Hi.
You are probably suffering from some type of sleep disorder, probably insomnia. There can be several underlying medical, neurologic, psychiatric or drug-related causes for this.
I would advise that you consult a sleep specialist with your sleep diary for a complete medical evaluation.
Sleep therapy along with sleep hygiene (avoiding caffeine, alcohol and tobacco as well as stress reduction) in due course of time helps the patient get proper night sleep.
Your doctor may advise you some Cognitive behavioral therapy (CBT) which might improve your sleep. The different approaches used are stimulus control, sleep restriction, relaxation therapy, psychotherapy and maintaining sleep hygiene.
You are taught not to read, watch TV, or do anything else in bed. You are also taught to go to bed only when you feel very sleepy.
Regards.
Not much information to go on, but a sleep study could tell if you have any sleep disorders that could be treated so you can sleep easier and less disturbed.