Why don't I want to do this?

I have three weekends left to finish my research paper for ANTH 553 (Mesoamerican Archaeology). Why can't I make myself get it done? The task seems daunting, so I guess I'm avoiding it.

25-40 pages, including bibliography. I have most of the sources, but I've read only a fraction of them. A little advice: Don't do it like this! I began collecting possible sources back in late September, thinking I had a great start. But now, my back is against the wall, and I may not be entirely successful.

I think the #1 thing getting in my way is one big fact: My original idea for the research paper isn't going to work. I had hoped to find sufficient data on the Late Preclassic Maya Lowlands that would allow me to identify the way that neighborhoods were organized. Unfortunately, that information is buried several meters below Classic and Postclassic construction phases.

So the big challenge is to read about the Late Preclassic sites and try to identify some other indication of changes in social organization, since floorplans of the communities will not be available.

I wrote this hoping that admitting my anxiety and avoidance might help get me back on track. We'll see!