Once you’ve created your plan, don’t second-guess yourself. Or think too much.
I’ve just been chatting with a writing student who thinks that his writing is going too slowly. He’s written the first draft of a nonfiction book, and is frustrated because he thinks he should be moving through the revision more quickly.
Sadly, he’s lost perspective. In the time we’ve been working together, not only has he planned and written an ebook, he’s planning another one. That’s huge progress.
I suggested that he get a timer, then work at his revision for two or three 25 minute sessions each day. When he’s not working, he should forget about the book, and let his subconscious deal with it.