Writing about four chapters simultaneously. Got ideas on how to start each one, so I want to get them written down before the muse escapes me, but I'm stuck on each one.
So that's fun.
Thankfully each one is with a different POV character, so they don't need to flow directly from one another, so long as the threads meet in the end.
But on the plus side: introduced a (minor) character I've had kicking around in my head for about 15 years (with a different, better name) and I managed to bring in a plot point I thought I wouldn't be able to reconcile with the direction my story's going.