Lot of confusion?!?

I am in a state of confusion lately. I took a job, but have heard a job I have been wanting for the past year is getting ready to come available and a friend works there so I may have a little bit of a gain in the interview process. I am needing to take a test that can totally boost my esteem and confidence in my career. Have taken the test once, but I failed. I have thought about doing it again and now I'm not so sure. I would have about a month to study and when I say study I mean HARD CORE study (4 of the 4inch binders FULL of information, reading books, notes, etc)! Not your average study session. I studied FOREVER last time, but the test didn't seem to ask anything I knew which made me feel so disappointed in myself and my abilities. Being able to study all day would work, but I work full time and sometimes more then that. I am just stuck as to what I should do and felt that I needed to "release" some of this confusion and stress. thanks for reading if you did and also sorry if you read all of this 'junk' ;o)