Johny :
Be yourself, that is my advice. Do the test after a nice rest, after doing something relaxing, having a decent meal....then try it. With the e-mail there is a link for training, just one or two tests....but it's a good practice yet. Remember that on the training page only the 2 final tests are going to be applied on the real test. The personallity test, take your time ok?
I've tried to send you a PM, but maybe because of the "newbie status" i'm unable to!
Um abraço e boa sorte!