And to start with, let's acknowledge that what works for me may not work for you at all! Every writer has their own tricks and starters. Here are a few of mine:
The Book Is Not Writing Itself
Pretty sure you know what I mean by that. You sit down, you have a pretty good idea of what should happen next, but it's not happening. You need the character to walk across the room, look out the window and then pick a fight with someone else in the room. Maybe. Maybe they don't fight. Maybe the character makes a cup of tea instead of looking out the window. Maybe . . . but you've written it three ways and they all sound stupid. Or out of character. Or just wrong.
I get up from the keyboard and walk away. (If you've got a cat and are working with a laptop, close it!) And I go do some other work, the mindless kind. Dump all the wastebaskets in the house and take the garbage out. Do the dishes. Take the dog out for a bit. Clean the cat box. Pull some weeds, mow the lawn. Even just take a shower.
Often when I walk away from the story, when I come back, I can move it forward.
Nope. I'm blocked. Really blocked.
Here is what almost always works for me. Go back four pages, or even back to the beginning of the chapter. Put on your editor hat and start looking at your work. Oh, you typed 'you' instead of 'your'. The car isn't red, it's candy apple red with metal flake. This is a run-on sentence. Fix all those bits as you go along. For me, what happens next is that I come to a spot where the story zigged when it should have zagged. I wasn't really blocked. My subconscious was nagging me that I needed to go back and fix that before I go on. And once I fix it, the story starts flowing again.
I don't want to write the next scene. It's boring.
Well, if it's boring to you, your reader will toss the book to one side. The solution. Don't write it. But the party needs to spend four days crossing the desert or your time line for the other plot line won't work . . . It's okay. You can just type, "After four days of punishing travel, they reached a small holding near a water hole." Or something similar. Then get on with the story. You can have a one sentence chapter if you want. It's your book. Or maybe later in the writing, you'll realize something important did happen during that crossing, and you can go back and put it in. That's okay, too.
This also applies to the 'I can't think of the right word' or 'I don't know the character's name.'. Move along. Use the almost right word and stick an asterisk * next to it. Later, do a search for asterisks and you'll find that spot and by then you'll know the word you wanted. Or maybe you just name the character Asterick.
* Do you have a copy of Roget's Thesaurus? If not, go buy one now. A fat paper thesaurus is a treasure. See, if I look for a synonym for 'treasure' via the word processing program I'm using, it will show me the same synonyms that every other writer is using. The thesaurus will give you a lot more choices. Trust me. Just don't get lost in it like I do.
Look at this horrible redundant three pages. I'm cutting them.
Wait! Two days from now, you will want that one sentence that you really liked. So in the folder where you are saving your work (and of course you are saving it to the cloud as well. . . right?) you add another file. Mine is called 'chopped bits.' So you cut those pages and paste them into the chopped bits file. And when you realize that it wasn't redundant after all, there it is! Cut and paste it back where you needed it.
The story has a great beginning. I was so excited to write it. The middle works, too. But I can't write an ending!
I spent years writing those stories. I probably still have the paper copies of them somewhere. Lots of them.
Here's the issue. You are afraid of committment. You know six possible ways to end the story and you don't know which one is the right one. The solution? Choose one and write it. Then maybe let it cool for a day or so. Then read the story. Maybe you'll love it. Maybe not. If you don't like it, choose the next ending and write that. Eventually, you'll find the right ending, and you'll have a finished story and you can submit it. Which is a lot better than having a file drawer full of stories with no endings. (Avoid the volcano and asteroid ending. I've tried those over and over, and they never seem to work. But maybe that's just me. What works for you might be very different.)
So, there they are. And it looks like the rain has stopped and maybe I can do some gardening today. Which is where I do a lot of my writing.
Just because I'm not writing doesn't mean I'm not writing.