Your topic can be any subject that you have specialized knowledge in. I've been working as a professional copywriter and author for around 30 years, so I know the writing business. It's a snap for me to create ebooks and reports which are useful to my fellow writers.
Since you now have a domain name and a web hosting server, you can build a website and/or blog, create eBook cover, optimize the website for on-page SEO.
Another friend is writing reports. She sells these well-researched reports for corporate businesses from her Web site for $295. The reports are case studies. They're thorough, and packed with information which is worth many times $295, so she sells thousands of copies of each report. She's stopped writing for business publications completely. As she says, she's making much more selling her reports than she makes for writing business articles, so why would she bother?
Kobo books is another site that also offers free classic fiction eBook downloads. But in order to download a modern book you have to pay money. Modern ebooks cannot be legally downloaded for free. Kobo books combines free classic fiction ebooks with a service that charges you a small fee for modern eBook download.
How to make money with eBooks is like making money from a paperback or hardback book, you just write it and sell it. With eBooks it is all done online, from the writing to the publishing. And the good news is you can do it all yourself.
If an eBook is lets say 20,000 words then that would be some 175 books. Meaning with the needed filler, introductions to chapters and some graphics, pictures, charts and typesetting it could be about 200 eBooks. And such a project might indeed take a whole year.
The professional success itself is not related to just a thing or two. It includes economical enhancement and e-books inner satisfaction along with great self respect. Most people change their jobs or professions when they don't find satisfaction in the work. But what if you don't find satisfaction in your next placement also? So it's better to know the reasons of your dissatisfaction first and then make any decisions. May be all you require to do is to bring some change in your outlook. Self help eBooks can help you in recognizing those reasons and handle them perfectly.