If you think that you are being put down by the exam, by the preparation, the magnitude and a series of negative results, well go through it anyway! It is not there to tell you that you are incapable, it is there to ask you how badly you want it, to check what you do when you encounter a challenge, to see how you react when your belief systems are down, to see how you respond to a stronger opponent. It is to make sure that you want it that badly enough..
Do it Anyway!
The only thing standing between you and your goal is the bullshit reason as to why you cannot do it!