Put me in a book shop (with a coffee area, of course), and it is humanly impossible for me to walk out without buying a new journal, or notebook of some kind. I'm tactile like that. There's just something yummy about the act of writing - pen to paper.
However, as someone who works full-time and has a full plate more days than less, such a luxury as that is rare for me. So, I have taken like a duck to water using Notion for writing my book.
It's digital.
It's desktop-friendly
It's also an App.
It's BRILLIANT for keeping my many projects/interests moving ahead.
It's free - and there is a paid version
I LOVE IT (in the absence of pen-to-paper mode)
What's your preferred 'tool' of choice?