That is my advice for today.
I thought about posting something about scene structure, or some thoughts from a successful author, but no. Drink coffee until you feel that vein in your temple start to throb (you know the one I am talking about), and unplug yourself from all your devices except the word processor.
Sit down in a corner somewhere and get writing. That is the only way to get where you’re trying to go.
If you just can’t do that, find a couple of well-written examples of what you are striving for and read them.