I think it's more helpful to keep your books sort of a singular focus. Get it said, get it said well, fascinate people with your words and then write another book.
Larry WingetA disorganized workspace means disorganized work habits. A sloppy work environment equals sloppy results.
Larry WingetWhen I'm writing a book - say I'm going to write a parenting book. I'll go out and buy the 100 top parenting books and I will read those, not so I can copy them for sure.
Larry Winget