The main problem of a student is his 'focus'. He must know how to focus on studies because knowledge is the only thing that can make you an ideal person. You must learn how to study. Students have difficulty in studying because they take studies as a heavy task, but actually study is for fun.

You can try the 21 days challenge. It will definitely work for you because 21 days are required for forming any new habit. In 21 days, you can integrate anything in your subconscious mind.

You must keep away all the distractions during study hours because distractions can seriously interrupt your study.

Information References:
https://en.wikipedia.org/wiki/Neuropl...
[This is in reference to the brain re-wiring that I talked about, how you can positively develop your good habits]
https://en.wikipedia.org/wiki/Educati...