You'll do fine. Just remember to answer all the questions in the context of your own life, being careful to step around extraneous information. They're right, it's all psychological. Drink some tea and get a good meal in beforehand, that's what I do at least.
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"Standing on a well-chilled cinder, we see the fading of the suns, and try to recall the vanished brilliance of the origin of the worlds."
-Georges Lemaitre
"I fly through hyperspace, in my green computer interface"
-Gem Tos