I used the method described in this chapter for years. I use the method for preparing lectures. I also used the method to write this book.
So, as a concrete example here, I show you some pieces for the chapter.
Fig: the actual pieces for writing this chapter
Rough translation of each piece for English readers is as follow. The broken grammar is intentional because I didn't care about grammatical correctness when I made the real Japanese pieces.):
You can see that there are many duplications in the content.
I made pieces once when I planed the contents of this book. It was in May 2016. I wrote "first try to write 100 pieces" because I usually do that.
After that, I left those pieces for chapter 5 aside and wrote the previous chapters. When I was writing the way to motivate yourself in Chapter 2, I noticed that it is a too big task for readers who are unfamiliar with the "to write all out" method. They can not predict how long the task takes. ((2.3.1) Task is too big)
In Chapter 2 (2.3.2) Timeboxing, I explained the method to motivate yourself by making a task smaller, breaking it by time.
As a concrete application of timeboxing, I add a new piece "try to write 5 minutes" that keeps the first step small. And then I re-arranged those pieces, and convert them into sentences. It was August 2017.