Many moons ago, I sat down to write my first book. Here's a link in case you want to read it. As part of writing prep, I reread much of my own shorter work.
And hated it.
Some of it was good, but it read more like the dumbass writer (me) was trying to sound smart than inform and convince people.
The sentences ran on. There was far too much throat clearing. The jokes, well, some of them were funny.
I determined to use that book as a chance to rethink and rebuild the way that I write. That's precisely what I pulled off.