Alittle Anxious (to say the least)

I am running my first 5k tomorrow morning.  

What?!

Yes, I should be sleeping - but I am wired, nervous, anxious, etc, etc, etc.  I have the skills to do it, now it is just about psyching myself up and just doing it.  It is not about time for me, but the accomplishment of finishing.  Wish me luck...