Don't worry about passing the exam. If you make 90 to 100% on the practice exams that come with the testing material you will do fine. Just take your time and make sure that you answer each question accurately. I found the preparation part much more difficult than the actual exam itself. Just stay positive or you may second guess yourself on the questions. Plus how much $$ do you blow on doing smaller things like car repairs. This is a cert that will pay you back 1000 fold what you pay for the tests in the long run. Just learn the material and you will pass the test. Don't just learn to pass or you will fail in the job. Not good.
Not necessarily relevant but true. Good luck.
Sincerely,
Michael Louis
CCNA,CCDA, A+, Net+, ACDT