I spent a lot of time writing an eBook that very few people read. I also wrote for Medium for a while and had minimal success. People also consider me a pretty good writer. So why should you keep reading this answer? Because I think I've learned a few things from these lessons that I hope may be helpful :)

The first lesson is that if you want to attract an audience, write about something people are interested in reading about today. There's a lot of research involved in this.

The second lesson is that just because a topic is important to you, that doesn't meant the topic is important to anyone else. Because of this, circle back to the first lesson!

Finally, writing an eBook take a pretty big investment in time and getting the book written is just the beginning. As one other respondent to this question said, after the book is written, the marketing part takes a lot of time and effort. Because of these reasons, in my opinion, eBooks are not a quick way to begin earning income.

It sounds like you need to earn money quickly. If that's the case, I'd suggest writing blog posts for other people, just to get started. You could start on Fiverr for lead generation purposes and to get your name out there. Try Upwork too. Finally, I came across this job board that may be helpful - http://jobs.problogger.net/. I'm sure there are other platforms that match writers with blog owners who are looking to outsource the writing of their blog articles.

The advantage to this approach is that you get paid, whether or not the article is actually read. The risk shifts from you to the owner of the blog who's paying you, who's hopefully done his/her research before hiring you to write the blog post.

Good luck!