Develop a study plan by making a strict timetable and adhere to it as much as possible.
Adopt a positive mental attitude as this will upgrade your energy levels and keep you charged up for the examination.
Peer pressure may lead you to follow what your peers feel is right. Their pressure may compel you to go by everything they think is right and you might feel like following their study pattern too.
Pay attention in class and concentrate on the subjects. This will help you achieve a high score.
Do not use many reference books. Being thorough with the NCERT should be the first prerogative as these books are enough for you to clear your concepts and cover the whole syllabus at a faster pace.
Solve previous years' question papers. Make a note of your mistakes and learn from them.
Write neatly on the answer sheet. A well-presented paper always impresses the examiner.