Dear,

According to your query you should invest few hours per day for yourself like pursue your hobby or try to do Meditation.

Try to read motivational novel or articles .In weekend you can do internship in NGO through that you would get exposure to understand the people thought , their idea and try to engage your self in productive thing apart from study.

Make time table for your study and extra work and don't use mobile or any other social activities while study.

All the Best

Everything should be made simple as possible and Work smartly coz u r the one who can change ur life.......All the best!!