Thank you for the information,
There are some common causes of insomnia like alcoholism, anxiety, depression, hyperthyroidism
, post-traumatic stress disorder, etc.
As per your symptoms, the chances of anxiety or depression should be ruled out.The chronic depression may be associated with insomnia and the treatment is with antidepressants
along with psychotherapy.
The anxiety if any is also associated with such symptoms.It may be related to examination worry, meeting other people, and other conditions and should be treated.
Though the thyroid
abnormalities like hyperthyroidism may also cause insomnia and can be ruled out with serum tsh and t3, t4 levels.
You should also avoid taking alcohol , smoking , excess caffeine, or any other recreational drug if you take so.
Just take the psychiatric consultation about the possibility of any of the above mentioned causes and treatment is according to the underlying condition.
Let me know if you need any more information.