I have been studying 3 months diligently, took a 36 hours class using Andy Crowe's book, also had Rita's book. took several exams online and was scoring on pmpstudy 72-85%, exam central low 80's, oliver 80's etc. bottom line apply yourself, be discipline is studying and read the questions very carefully. I took all 4 hours! when i noticed i was running out of time, i marked it and moved on. at the end I had 10 minutes left and went to my marked questions and answered the last one within 2 seconds! got 4MP! thanks again.