Hi, I thought you may like this Mentalrobics exercise from Braingle.com:
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Relax

Stress [ For more on 'Stress' go here: http://www.braingle.com/mind/534.html ] and anxiety interfere with your ability to learn and recall material. This is because your mind is diverting its attention towards worrying. If you are not devoting your full attention to the learning task, it shouldn't be any surprise that you are not learning effectively.

Test anxiety is a very common problem with students. The student may know the material very well, but when put into a test environment, their recall ability is impaired by anxiety. Worrying about things like the time limit of the test or getting stuck on a problem can cause enough stress to interfere with recall.

Anxiety can be mitigated by using relaxation exercises or by becoming more confident in the task by over-learning [ For more on 'over-learning' go here: http://www.braingle.com/mind/18.html ] the material.
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For more mind exercises: http://www.braingle.com/mind/