Jitters

I am getting nervous about the Asheville half marathon. I am supposed to work until 5 the day before, the drive down is 3.5 hours, and packet pickup only goes til 7. My parents (Asheville residents) are going to be in Scotland so I gotta drive myself to the race the morning of and somehow park. On top of that, my last few runs have been really slow and my knee/IT band has been hurting. Tomorrow I'm running 12 miles with Fleet Feet (and my fuel belt... mmm...). I hope it goes well, or else these jitters are gonna feel even worse.
The San Diego race was perfect. We loved the trip and were pretty happy with the race itself. Now I'm alone and the whole thing feels a little scarier. Even though I'm not planning on "racing," I do hear a voice inside my head demanding I get a[n even slightly] better time but I know the course is harder (hillier). I'm trying to generate some positive vibes for myself in the next couple of weeks.