I published my first book in 2007 to extend my healing reach beyond the confines of the clinic and hospital room. I’m certain my writing has improved the health of many folks I’ll never know about, and that means more to me than any financial success I’ve had with the books.
In 2020, my net profit from writing was $937.08, which is admittedly pitiful. The prior year profit was $5,802.48. Pandemic effect, maybe? To lower my expenses in 2021, I’ll look into a private PO box instead of US Postal Service ($168/year), drop Amazon Prime ($129/year), and negotiate lower fees with Network Solutions.
I am blessed to have a hospitalist job that pays well. COVID-19 has caused major economic hardship for many of you, including unemployment.
My primary means of advertising has been blogging. Cross-posting on Facebook, Twitter, and LinkedIn has done almost nothing for book sales. A few years ago I could give my hospital patients a business card with links to my books, but my employer insisted I stop.
If you care to support my writing, buy a book. If not for yourself, then for someone you care about.
Steve Parker, M.D.
PS: All my books are here and at Smashwords.com.
PPS: Guesstimating my combined federal and state taxes being 40%, I have $562.25 left after paying taxes. And don’t forget sales tax on many things I might buy with that $562.25.
Diabetic Mediterranean Diet 
I am sorry to hear that, your books deserve a lot of positive attention. You should be a big fish in the sea, but unfortunately you need a big fish in the sea to become one. There is so much input ‘out there’ to choose from and we are seldom directed in the most useful direction.
Thanks for the comment, Nicky.