nonstarter

I've finished making the videos I want to make, which is good, but now I have a lab meeting presentation to put together for tomorrow. Somehow I can't even start messing with it. I just look at the slides from last time, which I would normally use as a jumping-off point, and think to myself OH HEY I GOT NOWHERE. It's only been six weeks, much of which was vacation-laden, but I'm so anxious I don't know what to do. Going to meetings and eating lunch with a book has not helped. (Book could have been better chosen, but still.) Help! What do you do to stop freaking out and start communicating?