to read or not to read

How important is an exam really?
It is just one out of many. No one will know if it was because I did not study, or if it was because I had a bad day/examinator/exsam question that I did not do well.
The grade will of course affect my grade point avarage which again will affect my ability to get a job. But again, how will a job depend on 0.somthing in my GPA?
This one exam on may 1th is worth nothing in that content.
But on the other hand, Im should not do this for a examinator, future boss, GPA and that stuff, I should be doing it for my own sake. For me. This is a learning process as well, and this course contains knowledge that will be useful after I have graduated. Exam as a learning process.

nah, your right I should go find the book and get to it. Instead of just postpone it..