In about six years, I have sold over 40,000 books and earned over $160,000 (income) from selling non-fiction books on Amazon, all these while writing from the side.

I have a full-time job, am a father of three lovely young boys, and I don’t have time to spend 40 hours a week writing books. But in this article, I will share with you my journey.

I write mainly tech books:

Thankfully, my readers have been supportive and quite a number left good reviews. Quite a number have been Bestsellers

A few have been adopted by universities as textbooks:

The best thing about my books is the passive income that I get from them, allowing me to have more time freedom in spending it with my family.

It also led me to be more confident in myself, knowing that I can always quit my job and go full time into writing. But I love my job and find meaning from it (i am in full time church ministry).

I wake up daily excited to write. When work is a dread, or when something unhappy pops up, some writing will always bring in positive energy into me. I don’t dread writing. In fact, I can’t stop myself from writing!

Besides the income, writing has also established my authority in the tech field. As I have mentioned, universities have adopted my books in their subjects. I have been approached by traditional publishing houses to author books for them.

Here are some mindsets that have helped me get started on being a successful nonfiction author:

Yes, I have a computer science background, and I worked in the industry for a few years. But in no way am I an expert in the topics I write about. For example, in my most profitable book, “Beginning Node.js, Express & MongoDB”, before writing the book, I did not have experience in that before. I did have previous experience with older server-side technologies, but not Node. So was that going to deter me from writing a book about it? It can. But learning a new technology itself was interesting to me. So I read the top three selling books on Node, went through the top few online courses on Node, and compiled all that content into my very own compact book (which makes me know more than 90% of people already).

And because I was learning as I was writing, I didn’t have to worry about sounding ov