There are several reasons why PMs failed in the PMP/CAPM Exam. Many failed to leave their knowledge and experience out of the exam room. Regardless of what your experience and knowledge, depend 100% of what PMBOK and PMP Exam guide tell you
This simple “truth” is the gateway to success. When studying PMBOK for the exam, please follow this dogma.
Ok, next is the 7 virtues of PMPs and PMIism that you need to believe for the exam
And these are the 7 tips in facing the PMP Exam