If you self-publish your book, you are not going to be writing for a living. You are going to be marketing for a living. Self-published authors should expect to spend only 10% of their time writing and 90% of their time marketing. The self-published author who came to my blog to preach the virtues of his path, claiming to make five figures a month from Kindle sales of his 11 novels, puts his writing time percentage in single figures. If that sounds like fun to you, be my guest. But if your passion is creating worlds and characters, telling great stories, and/or revelling in language, you might want to aim for traditional publication.
By Ros Barber; more at The Guardian