Pre exam weirdness.

I have my first paper in a couple of hours.
I think i have about 25-30% of it prepared.
This, freaks me out.
But i'm tired of freaking out. And i'm tired of finding it funny. Its not funny anymore.
I can't stop imagining myself in that stupid exam hall, sitting there, all cluless and lost, watching others frantically fill page after page. Yeah, not a good image.
Just about two more hours to go.
I just don't like to fail. I don't. -.-