Passive income: NO

Earning passive income solely from writing autobiographies as a side hustle is unlikely for most individuals. While it's possible to generate royalties from book sales over time, the level of success needed to achieve significant passive income is rare. Most authors need to actively promote their work to maintain sales. Automation and outsourcing can help with tasks like editing and cover design, but ongoing marketing efforts are usually required to drive sales. While there are success stories of authors earning passive income, they are often exceptions rather than the norm. It's important to set realistic expectations and be prepared for ongoing work to maintain and grow passive income from autobiographies.