It is due to anxiety and may be deep inside some emotional cause working.
Consult psychologist ,he can help you through counselling sessions.
May be psychiatrist help needed.
Health Tips
for overall health
1.sleep 8 hrs at night.
2.avoid too much social media.
3.avoid too much use of mobile pc laptop.
4.avoid mobile pc 1hr before sleep.
5.before sleep may hear good music,or read a good book or can watch a good movie.
6.workout daily or regular morning walk or join gym.
7.Share ur thoughts with ur parents or good friends.
8.Concentrate on ur work,study,passion, hobby.
9.Maintain proper diet.
10.Take proper protein supplement and some time multivitamines.