TOPIC: What am I missing here?

I wrote my first exam on June 29th and I failed. I was scoring between 65-70% and scored an 80% on the Oliver Lehman site. I noticed that there were a lot of wrong answers on the practice exams that I was doing.
So I re-focused, and I got the PrepCase exam stimulator so I can ensure that the questions and answers are a credible source.
I started off well with the exams - scored 70% and 75% and then for the past 2 exams I have been scoring 68.5%
I have done a lessons learned spreadsheet, I have studied ITTOs, looked at formulas, I can't read Ritas book or the PMBOK anymore as I feel like i have it all memorized.
I write the exam this Saturday on the 21st and I just don't know if my self image can take any failure... What can i do to feel like I am truly ready for this exam... given my very shorted time frame...