Welcome to HCM
You have mentioned that when you have some work to do next day especially then you are not able to sleep on that night. You are not getting enough sleep and this is affecting your education, work and health. You are getting in low mood day by day.
Dear friend first of all you are not in Depression
, the root of problem is your insomnia. Cause of insomnia is usually Anticipatory Anxiety in you. So managing anxiety will improve your insomnia and consequent improvement in your mood will occur.
- Best way to manage anxiety is by behavioral methods; deep breathing exercises, progressive muslce relaxation techniques
, yoga or light exercise in evening will help you a lot.
- If its not improving with behavioral methods then medicine can be taken for anxiety for short term or on SOS basis like low dose Clonazepam
will not only relieve anxiety but will also induce sedation and will help in sleeping. But take medicine under advise of psychiatrist
- In your case drug like Zolpidem
can also be used as these are comparatively of lower abuse potential and are used in inducing sleep and there is no rebound side effects.
- Improving sleep hygiene
is also must like fix your time to go to sleep, don't take tea/coffee in evening, avoid aerated beverages, don't make bedroom your workplace, don't use computer on bed, changing the position of bed in room is also a good idea etc.
So try to improve your schedule and you will find improvement.
Hope I cleared your doubt.
thanks take care.