You are surely meaning books like "No More Mr Nice Guy" and "Married Man's sex life".. and the critics are nasty Mothers
No. Them and ALL the others. The few I can think of is His Needs Her Needs. Mars Venus. All of them.
If you had an interest in an analysis like I do, I might go to Amazon, look up relationship books that sell and ask myself
1. Why does this book sell?
2. Does it offer a unique tool, perspectives?
3. Do those tools/perspectives have merit?
The best books and magazines on writing all seem to explain why some never put their writing out there. It is fear of judgment. You don't strike me as someone with those fears yet you mention them when we discuss it in the form of "who would care what I think?" and "what has not already been done that I could provide that was worth $15 to a person?"
I start with a table of contents when I write training manuals. From there I write each content in the order of my own amusement as the fuel to get a lot done fast. Sometimes these get broken down further. Other times they get consolidated. It ones very esy to me because I have a blueprint and can write to get a point across.
Once the amusement fuel dries up I am able to finish because the "Im almost done" fuel takes over.