I was an established writer for IDG Books (Denmark) and all my books hit the best-seller lists.

When I started self-publishing on Amazon? Haha :D Nobody knew me.

You've probably run into the same issue.

How do you get your name out there?

How do you make readers look for your next book and grab it?

Now, there's a new struggle there. You need lots of books for that. You need to market your books. You need social media branding, and all that is time-consuming work.

I found out the hard way. I had just checked for categories with lots of sales...

Well, the market was crowded, and I didn't have the time or means to compete in it. It would have taken a lot of paid marketing and work to get my book intin the top 100 there.

It also takes constant new releases, otherwise you'll be forgotten quickly and you'll have to do all the work again from scratch.

For sure, you can find exceptions to that (especially if the author has good connections), but the rule of thumb is that you'll need more than one book.

The first book under a new pen name rarely makes sales, unless you do some kind of paid promotion.

You must publish more than one book about the same topic, so you'd better make it one that you can write about without having to get a formal university education first.

And that's another problem I've encountered often.

It seemed to be a rule!

High profit + low competition = Expert topics.

Very hard to write about if you weren't an expert with a PhD.

But with all of them, I had to know where to look.

So if I had an idea, say "blogging," then I could check if there were blogging related subcategories I could get into.

My results were limited by my imagination.

That meant that I missed out on a lot of book sales.

I was missing one important tool, and I discovered - once I got it - that with the right tools it is possible to find niches with low competition and steady sales.

You just need to dig deep enough, because...

You can't find them anywhere when you're publishing your book and owners of tools like KDSpy won't be able to see them either.

But when you've found a secret subcategory like this you'll want to add your book to it, which just isn't possible, unless you know the trick it takes to get it in there.

There is a secret category that anybody can write about with fewer than 300 published books in it - low competition, but the best-selling book still makes an estimated 28 sales per day.

Given that the average price of those books is just below $5, that's close to $100 per day.

And that's $3,000 per month for just one book.

Not bad for a book anybody can write.

Even without hitting the top spot, the books in that category make sales on a regular basis. Almost three books per day on average. Nothing to fire your boss over, but with enough books out, you can make a living.

You will no longer have to struggle to come up with ideas for more books about the same topic, because this subcategory has so many subject matter options. And chances are you can easily write about a lot of them.

They aren't technical or difficult, and you might already have all the knowledge you need, even without doing research.

(You can always do some research to make your books even better.)

Would you like to find out what subcategory I've found? And how to write books you can publish in it?