I'm over halfway through mine, and it's all been build with absolutely nothing really happening! It's kind of pissing me off for one thing, but then I think about how rewarding it will be in the the end when I actually get to WRITE about their relationship. And by then I will have all sorts of evil plans that are already still in the making.
I have no plan for parts eight to sixteen really, except a basic sketch what's roughly going to happen in them, and from there on I've got it mostly all mapped out in my head. I think that I should start making jot notes so that I can keep track of where my muses take me since they're in a bit of an alcohol-induced stupor at the moment... I had to find some way to keep them active enough to help me and keep me motivated.
Seriously, my muses are messed up. I think that they'd been listening to the smut bunnies too much for it to be healthy... yes, I do name that part of mind because it literally does have a mind of its own. No I do not have mental health issues.