Series: How to Choose a Book Topic That Builds Your Business Reading time: ~7 minutes
When coaches and business writers first come to me with a book idea and topic, I can almost predict what they’re going to say about targeting.
“I want it to appeal to a wide range of people”.
“My work really does apply to everyone — the principles are universal”.
I understand the instinct. They’ve invested years developing your expertise. Maybe helped people across different industries, different life stages, different challenges. Why would anyone voluntarily shrink their potential audience? (The answer is very soon).
The thing that separates commercially successful books from well-meaning ones is that the narrower your book topic, the more powerfully your book connects. A specific book doesn’t reach fewer people. It actually reaches more people, because specificity is what makes a book findable, shareable and memorable.
Let me show you exactly what this looks like in practice.
How to Win the ‘Shelf Test’ with a Narrower Book Topic
Imagine you’re a 44-year-old woman. You’ve just been made redundant after 18 years in corporate HR. You’re shaken. You don’t know what comes next. You open Amazon and you see two books:
Book A: Reinvent Yourself: A Guide to Personal Transformation
Book B: The Second Chapter: How to Rebuild Your Career Identity After Redundancy at 40+
Both books contain essentially the same wisdom. Both are written by equally qualified coaches. Which one does she buy?
Book B. Not because it’s necessarily better written, or more comprehensively researched, but because it speaks directly to her. It names her situation. It signals that the author understands her specific experience, not just the general concept of change.
This is the niche effect. And it’s so powerful that in our book coaching we focus a lot of brain energy on the commercial angle.
Why Broad Topics Fail in a Crowded Market
There are already thousands of books about personal transformation, leadership, productivity, mindset, and resilience. The category leaders in those spaces — your Brenés, your Atomics, your Coveys — have spent decades and many dollars building their platforms. You and I are not going to compete with them.
What you can do is own a corner they haven’t bothered to occupy.
This is basic positioning strategy, but most specialists/coaches don’t apply it to their books the way they would to a service offer. Coaches would position a package specifically — for a particular type of person, facing a particular challenge, wanting a particular outcome. Your book deserves the same discipline.
A narrow book topic does three things a broad one cannot:
It signals authority. A book written for a specific audience signals that the author has gone deep on that problem — not just surveyed the landscape.
It creates word of mouth. People recommend books that made them feel understood. “You have to read this — it’s exactly about what you’re going through” is the most powerful distribution engine in publishing. That sentence only happens when a book is specific enough to feel personal.
It’s findable. On Amazon or Google, a specific title and topic is searchable. Few people type “personal growth book” into a search bar. They type “book for women going back to work after kids” or “business book for introvert founders.” Specific books show up. Broad books don’t.
From Too Broad to Just Right
Here’s a framework I use with authors. Think of your book topic as sitting somewhere on a spectrum from category to niche to micro-niche.
Category is the broad umbrella: leadership, wellness, entrepreneurship, relationships. Most of us know our category.
Niche is a specific angle within that category: leadership for first-time managers, wellness after burnout, entrepreneurship for creative freelancers, relationships after divorce.
Micro-niche is a specific person with a specific problem at a specific moment: leadership for first-time female managers in male-dominated industries, burnout recovery for nurses, freelance business-building for graphic designers under 30, dating confidence for divorced women over 50.
Most coaches start at the category level. The sweet spot is almost always at the niche level — occasionally the micro-niche, depending on the size of that specific audience. (Research this).
Let me make this concrete with examples based on the Business Author Academy philosophy.
From Broad to Niche: Title Rewrites
Life Coach → Confidence Coach, writing Confidence Outcome books
Too broad: Building Confidence: A Complete Guide
Niche: The Confidence Code for Introverts: How to Lead, Speak Up, and Own Your Space Without Becoming Someone You’re Not
Why it works: It speaks to a specific personality type (introverts) with a specific fear (changing who they are to succeed). Every introvert who has ever been told to “just put yourself out there” will feel seen by that subtitle alone. Remember “Quiet: the power of introverts in a world that can’t stop talking”? That bestseller really called to see the strengths of introverted people.
Counsellor → Grief Specialist
Too broad, unless you want to only speak to feelings: Understanding Grief and Loss
Niche: After He’s Gone: Rebuilding Your Life After the Death of Your Partner in Your 50s and 60s
Why it works: It names the reader (women, older, partnered), the exact loss (death of a partner, not divorce or estrangement), and the life stage. A woman in that situation will be pulled up by the title because it speaks to her life. Like a sparkling jewel in the sea, it stands out.
Business Coach → Exit Strategy Specialist, writing Exit Strategy books
Too broad: How to Grow and Scale Your Business
Niche: The Founder’s Exit: How to Build a Business Worth Buying — Before Getting Ready to Sell
Why it works: It reframes the growth conversation around a specific goal (exit), a specific reader (founders), and a provocative timing insight (before you’re ready to sell). It immediately separates itself from every other business growth book.
Executive Coach → Burnout Recovery Specialist, writing Overcoming Burnout books
Too broad: Overcoming Burnout and Reclaiming Your Energy
Niche: Still Standing: A High Achiever’s Guide to Recovering from Burnout Without Losing Your Edge
Why it works: It speaks directly to the reader’s identity (high achiever) and their specific fear around recovery (losing the drive that made them successful). It acknowledges what most burnout books don’t: that high performers want to come back stronger.
The Objection I Hear Every Time
At this point, most coaches push back with some version of: “But won’t I be limiting myself? What if people outside that niche would benefit from the book?”
Here’s what I’ve noticed: the books that are written for everyone are not selling. But the books that are written for a specific person are read – and recommended – far beyond that person.
When a 32-year-old male entrepreneur reads Still Standing and finds it useful, he doesn’t put it down because it wasn’t technically written for him. He reads it and thinks “this is brilliant”. Then he recommends it to his high-achieving friend who is burning out.
Specificity is a magnet. It attracts your ideal reader with force – and it doesn’t repel everyone else; it just doesn’t speak to them from the cover.
The risk of being too broad is real and costly. The risk of being too specific is almost always overstated.
How to Find Your Niche: The Amazon Gap Method
In my Establish Book Coaching, I recommend doing the homework of the Amazon marketplace gap analysis. It’s free, it takes about 30 minutes, and it will show you exactly where the customer need is in your topic area.
Here’s how to do it:
Step 1: Go to Amazon Books and search your broad category (e.g. “burnout recovery” or “career change women”).
Step 2: Look at the top 10 results. Note the subtitles carefully — subtitles are where authors signal their specific angle and audience. (Study 5 in depth).
Step 3: Take notes. What audience groups are well-served? What life stages, professions, or specific situations appear repeatedly?
Read the reviews and find out from the disgruntled readers what topic expectation is missing?
Did they like the analysis but the stories weren’t relatable? Did some customers want to know more about a certain area? Here is where your pen gets busy.
Step 4: Cross-reference the gaps with your expertise. Where do your client stories, your methodology, and your own experience sit in that gap?
The combination of market gap and genuine expertise is where your niche lives. Remember, the market needs to want what you know or have brought light to.
This method also gives you something invaluable before you write a single chapter: evidence. When you can point to a gap in the market and show that your angle doesn’t exist yet, you’re not guessing — you’re publishing with commercial confidence.
The Niche and Angle is the First Piece of Everything
Once you’ve found your market segment and angle, everything else gets easier.
Your title almost writes itself. Your subtitle practically writes itself. Your introduction has an obvious opening line. The ideal reader has a persona and a name. Your marketing message is obvious. Your Amazon categories are clearer.
A strong, specific niche and angle is the structure that holds everything up: “the bones”.
Most authors treat the niche as something to figure out once the book is written. Jen leads the author to get it right before writing a word. So, when they sit down to write, they write faster, clearer, and with more conviction because they know exactly who they’re talking to.
“Tell me what your niche is and who your persona is”, your coach says.
What Comes Next
Knowing your niche is step one. Knowing that your niche idea is commercially viable is step two. This is brave work. You need to find the reader’s problem to create the solution!
In the next article, we’ll look at the most reliable way I know to test whether your book concept is aligned with your ethos: the 250-word synopsis method. It takes about 10 minutes to write, and it will tell you more about your book’s strength than hours of outlining ever could.
This article is part of the series How to Choose a Book Topic That Builds Your Business at BusinessAuthorAcademy.com.
About the author: Jennifer at Business Author Academy helps you write, title and position a commercial book. With tips on marketing and personal brand, and a publishing system, full support is available.