If you are reading this post - you got here because you searched the Internet and were motivated enough to do so. Wonderful- you are a supply management leader !
I am pretty sure that you have very little competition because less than 10% of the world's supply managers - that are qualified to take the CPSM- are really trying to even find out about the certification let alone try and take the exam. How do I know ? - from the statistics of this blog which is the top blog on the CPSM.
So if you are motivated enough to investigate the CPSM - you are going to make it. Just stay with it.
Best of Luck and Happy 2013.