Since, I failed in my first attempt of PMP, I think, I am in better position to share the learnings, since I know better on what NOT to do rather than what to doJ. And yes, I did clear it in the 2nd attempt.
Common mistakes done:
Mistake no 1: Overconfidence: yes, and I bet many don't realize this while preparing that they are overconfident. Perhaps, after failing, people understand it, so a caution. "Don't take it lightly". For me, I have cleared many certifications in the first attempt so I was under the impression, "what so big deal with PMP", but I was wrong. I was even comforting myself that so many other folks (read idiot folks) in my organization have done it, so I should be able to crack it easily, but I was wrong. Everyone has his own journey and they deserve the success of their hard work too. So, don't be under the impression that you'll be able to crack it easily. PMI doesn't take you lightly; they're a bunch of serious folks.
Mistake no 2: I don't have to spend extra penny in these online paid mock exams kits (like simplilearn, prepcast etc).
Like many others, I didn't want to spend a single extra buck on this exam other than my application fees. After all, I have NOT done it for many of my earlier certifications. I, again comforted myself that there are many online free exams, let me take them and I should be good. But, the biggest mistake is, these online exams do NOT tell you why you are wrong. They don't tell you why your right choice is really right. Basically, you don't retrospect. I had answered almost all the free questions available online but never bothered to understand why I was wrong. I just used to shrug my shoulders and murmur, "hmm, maybe I was wrong". Trying to find out why you are wrong and why the right one is right is VERY VERY important. Pay attention to that. Before my second attempt, I used Prepcast and it gave me an insight on where I was wrong and most importantly - WHY. After all, you've paid these guys and they'll tell you in paragraphs on why you're wrong with conviction as opposed to a single liner available in online free exams which leave you clueless many times.
Mistake no 3: When it comes to an exam, I can put myself together for 4 hours. I don't need a MOCK exam at home.
Take it again. Many of aspirants here are working professionals with family, kids and many other responsibilities. Gone are our graduate, college days when we used to sit around for an exam for 3 or 4 hours. We are NO longer habitual to it. Again, don't take it lightly. Many online mock exam kits make you sit for 4 hours. Time management on this exam for 4 hours is also a key. If you don't get an answer to a question straight, jumping to next one is important. You've to take that decision in that moment and these MOCK exams prepare you for that. I remember, I spent a lot of time on many questions in my 1st attempt. These MOCK exams, for that matter, prepare your brain for 4 hours and enforces you to learn the time management of 4 hours. No MOCK exam contains the actual questions getting asked in the PMP, so do NOT buy it under the impression that you've bought the PMI-PMP question bank.
I cleared this exam on 19 Jun 2018 with 3 ATs, 1T and 1 BT. My 1st attempt was exact 20 days back with 2 ATs, 2 NIs and 1 BT. Bare it, it was a very close call but nonetheless a failure.
Fellow aspirants: Feel free to get in touch with me if you need any other info.
Wish you all the best for PMP success. It is a wonderful journey, tough at times but NOT impossible.
Swapnil.
PMP®, PSM®, ITIL®, ISTQB®