It may be Bipplar Mood Disorder.Consult psychiatrist as soon as possible.
Also consult psychologist for counselling sessions and continue both the treatment.
Dont loose hope or dont let ur self down.
Fight with it,u need family support also.It is a common disease now a days. So,be brave and win the battle.
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.