Make a proper time table and divide your time according to your week points.

Mark some time to revise what you studied the previous day.

Take breaks of 10 minutes intermittently every 1.5 hours.

To avoid frustration, give some time to your hobby for entertainment.

Try to be self-motivated and passionate. You can visualize each positive outcome of your hard work. Try to see into your future after selection/getting the desired post.

Check here UGC NET Computer Science Preparation Tips

Try to be in the company of serious aspirants. Serious means damn serious. Avoid any kind of distraction. Only discuss the things which are concerned with your preparation only. This will keep you motivated.