According to an article by Alison Flood in theguardian (see link below) writing is a very hard way to make a living. She points out that while we often hear about the eight-figure deals that a few fortunate authors (very few) are able to secure, the vast majority of authors, both traditionally and self-published barely scrape by on their earnings. However, her article concludes with a quote by successful indie author Hugh Howey that holds out hope for the future of self-publishing.
“…The simple fact is this: getting paid for your writing is not easy. But self-publishing is making it easier. How much easier? We don’t have sufficient data to know. But a conservative estimate would be that five to 10 times as many people are paying bills with their craft today as there was just a few years ago. And that should be celebrated.”
So hang in there and keep writing!