Anyone can make a living off of their first book!
It is not easy to join an industry with fully established sellers and loyal customers. The book industry is no different. To get a piece of the pie you need to work hard and smart simultaneously.
TIPS OF MAKING SUCCESS OF YOUR FIRST BOOK
Ensure the quality of your writing is exemplary.
Market your book like it is the only book on the planet.
Share your manuscripts with professional editors for proofreading, this will help you remove any form of mistakes.
Write on a topic you are familiar with.
Read books written on your chosen genre or topic.
The success of any book does not necessarily depend on the one who wrote it, although there is an exemption to this rule. Some authors would sell massively due to their name and not necessarily the book. This though should not discourage from releasing your story.