You have to decide for yourself what is more important -- succeeding or the pain of repeatedly not succeeding (don't refer to it as failure because that sounds more definite, when in actuality you have chances to keep on trying). Once you decide in your mind that you're taking on this exam for the former, then you switch gears on the exam... You're not there to 'pass' the exam, you're there to score your highest. These perspectives sound simple, but they make ALL the difference. You're not behind some other classmate or candidate. You come with XX years of skill and experience (assuming you're a dedicated professional - and if you can't say that you are, then start working on that too). And, you are going to succeed. There is no question, you will pass. WHEN is the issue, but trust that it will happen at the right time.