The self-publishing game moves pretty quickly. Bowker statistics show that around 391,000 self-published titles were published in 2012 alone. Since 2007, self-publishing as an industry has increased by a mind-boggling 422 percent. So if you want to stay in the game, you have to publish frequently. There's just one problem: it takes a long time to write a book. But you can still stay in the game. Start selling in-between books.
On Again, Off Again
Indies have to play the perfectionist game. You'll spend more time editing than you spent writing the darn book, and lots of editing is second-guessing and fact-checking and plot-managing (and, if you're like me, frustration). Factor into this the fact that you have a day job, and time starts to get pretty short. Let's not forget that you are also human, and must spend time eating, sleeping and not working (because if you don't relax a little you're no good as as a writer).
When all these factors come together, it's really not easy to publish new titles frequently. Books take time, and lots of indie authors don't have a lot of time. So you end up defeating yourself before you can even really get in the game. You have to publish often to keep selling often, but you haven't got the time to write often. Don't give up just yet. There are ways to start selling, even when you're in-between books.