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Does It Matter What You Publish
I have always championed everyone's right to publish whatever they want to. Some people may disagree with this, arguing that too many poor self-published books let the side down. This is not true.
There is a very important concept to grasp here. When you publish a new book it does not create any new readers. If you manage to make a few sales all you are doing is taking readers away from some other author. This is a competition! So, if you publish a book which is of a poor standard you are not likely to get very far. Even if all the poorly written dross is withdrawn from the market that is not likely to help the average author because there will remain so much good stuff out there. There are millions of perfectly formatted, edited and well written books available. These are the books your book is competing with, not the books with poor spelling, bad grammar and boring storylines unless, of course, your book is in the latter category.
I'm not sure who was the first author who thought 'I know what, I'll get people to crowd fund my book. I'll earn thousands of dollars that way' but I wonder if his dream came true. The rest of us sell one book at a time. We're elated when there's a spike in our sales and down in the dumps the next day when sales are flat. Such is life in one of the most difficult markets. If you write because you have to there's a chance you might be happy. If you write because you need to plug a hole in your finances you are bound to be disappointed. For every down-on-their-luck person who self-published a book and sold 3.8 million books in a month and became super rich there will be millions of people who sell 3.8 books a month, if they are lucky.
Remember - publish whatever you want to but if you want to sell you have to be realistic.