‘Writers starve in garrets.
Many professional writers make incomes that would make doctors and lawyers envious. Most make reasonable incomes. If you decide to make a career of writing nonfiction books, the major benefit is that if you choose your book’s topic with care, your book can stay in print for many years. For each year that your book’s in print, you get two royalty checks. Let’s say that you write two books a year for five years. At the end of the five years, if your books all stay in print, you’ll be getting ten royalty checks a year. These ongoing royalties are your nest-egg, profitable investments in your future.