Write what you need to write, not what is currently popular or what you think will sell. -P.D. JAMES
This is the hard one for us, isn’t it? Even if you are not planning on selling a book, you still have something to sell. An idea to the boss, or to your customers, or to a friend to get them to agree with you. As someone who writes for pleasure, or as one who lives to write, I think we do get the freedom to write whatever we want. At least, we get it more than others. What do you think?