Some thought troubled your mind.Anxiety depression etc are the causes.But dont loose hope,this all sort out after few counselling sessions.
Ur case needs details discussions.
Visit cou selling psychologist to find a proper way to solve it.
Health Tips
1.dont loose hope,emhance your self confidence.
2.sleep 8 hrs at night.
3.avoid too much social media.
4.concentrate on your work study family hobby passion.
5.Spent goo and quality tines with your parents and friends.