CONCENTRATION - Not Just a Mind Game 
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Find a place to study and keep it for study only.
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Make sure the environment has all the study tools you will need.
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Minimize the noise level and the visual distractions.
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Avoid relaxing while working.
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Keep a paper handy to jot down thoughts that cross your mind while studying, get them out of your mind and on to paper.
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Set study goals before you begin each period of study (i.e., number of pages, number of problems, etc.)
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Give yourself rewards after specified goals are reached.
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Break up the content of study by mixing up subjects and building in some variety.
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Make the most of break periods - do something very different.
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Don't try to mix work and play.
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Start with short study periods and slowly build to longer periods.
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Plan the length of your study period by the amount of material you have decided to cover not by the clock. (A clock can be a serious distraction.)
REMEMBER. . . 
You will be able to concentrate best if you:
- Study during the day and early evening.
- Study when there are the fewest competing activities in progress.
- Take short breaks and STOP studying when fatigue or lack of attention occurs.