Don’t think about your previous bad result as it can disturb your present study. Make proper time table. If you have not made proper time table don’t west a minute. Make your timetable. By making your timetable you can give time to all your subjects. You can analysis your strength.

If you find something difficult and feel bore. Leave it and switch to other questions. As it has been seen that the question which get you bore will west your time and moreover you will not be able to catch it.

Take breaks while studying. It doest not mean that you go for playing cricket and return after 2 or 3 hours. It means that if you are studying continuously then take 10 minute break after 1 hour. Which will keep your mind fresh and you will also not get bore.
Try to solve all your doubts with your friends, your class teacher or in your coaching center. Analyze yourself and come to know in what subject you are weak. Try to give more time to it as compare to others.

Chose best and suitable place for your study, Calm place will help you to concentrate better. Always practice and revise your all subjects. Specifically in math, try to practice your all question. Learn math formulas on regular basis. Try to be master of your subjects. Give best time to that subject that you support to be very hard.

Try to practice in writing, make your revision time table also for all subjects.

Paying cricket or football in the park, playing your favorite game, watching your favorite serial and going to a friend house, is very important to keep your mind fresh.

If you are going for exams feel relax, it will keep all your learn thing fresh in your mind. Don’t think for results just give your exams with full concentration and efficiency.