Sometimes I don't know what to do. You ever get in those lulls? There's a lot you could do, perhaps a lot that you should do too. It's so easy to get trapped in the comfortable cycle of inaction, of waiting for clarity.
As Kyle Eschenroeder beautifully put it: "Waiting is the least motivating thing you can do." You need to do something - but what? There are a few things I've found to be productive 99% of the time; I think of them as catch-all cures for when you don't know what to do.
1% of the time, you probably still need to do the work for that deadline though.
Walk. Moving forward gets you out of bad loops. Walking is the lowest effort, lowest barrier to entry form of exercise. Plenty of great minds have praised the simple stroll, seeing it as a key part of their day and process. I find that going on a walk, whether it's for 20 minutes or three hours, is a sure-fire way to escape a lull.
Clean. I'm pretty terrible at maintaining a consistent cleaning schedule. At any time, it's likely that something in my house could do with being cleaned or tidied. Ever noticed how much better you feel after cleaning your bedroom? Set a timer for 15 minutes and clean. If you want to carry on, go ahead, but just 15 minutes can make a world of difference.
Meditate. You can spend hours meditating without wasting your time. Most people don't spend enough time on mindfulness and breathwork, especially those "too busy" for it. It is especially powerful when you don't know what to do. Most people, faced with infinite posibilities and zero direction, try to distract themselves with social media. Meditation is the opposite of scrolling. Do it instead.
Write. My approach to most things is that, if I don't know what to do, I write. I have stacks of journals of me figuring out what to do. By writing, you can explore and organise your thoughts. With clarity, it is much easier to act. The important thing is to act - even if it's a small action - immediately after putting down your pen.