Meditation has little to do with escaping problems or thinking about nothing. Instead, the breathing techniques help you calm down and think more clearly about your feelings. The issues on your mind unfold clearly, as if they were in slow motion. This clarity is called "mindfulness”. Being mindful means that you are aware of what you are thinking without becoming caught up in your thoughts. It takes practice, but with time, that big test will not scare you anymore. You will realize through meditation that fear is just a product of not being mindful.