I was sitting across from a first-time author at a coffee shop in Portland, and she'd just finished telling me about her book. It sounded genuinely good — a memoir about rebuilding her life after a medical crisis, with a practical undercurrent about how she restructured her finances and daily routines from scratch. I asked who she'd written it for.
"Anyone who's ever faced a setback," she said. "Really, anyone who wants a second chance."
She meant it sincerely. And she was wrong.
That answer — "anyone who wants X" — is the most common response authors give when someone asks who is my book for, and it's also the least useful answer you can give yourself. That's not a reader. That's a wish. You can't find that person in a bookstore, you can't write a sentence that speaks directly to them.
There's a better way to answer this question, and it starts with a different kind of question altogether. If you're working on this as part of a larger positioning effort, the full framework is in Books That Sell.
The answer that sounds right (but isn't)
When authors think about their target reader, they usually land in one of two places. The first is demographics: "entrepreneurs in their 30s," "women navigating midlife," "parents of kids with learning differences." The second is aspiration: "people who want to live more intentionally," "anyone who's ever felt stuck," "readers who believe business can be done differently."
Both of these are answers. Both get written into book proposals and author bios and pitch emails. And both will steer you wrong, because they describe a population, not a person in a moment.
Demographics tell you roughly who might be in the room, but not what that person was thinking at 11pm when they opened Amazon and typed something into the search bar. Aspirations tell you what someone wants to feel, but not what book they read six months ago or what specific frustration finally sent them looking for something new.
The coffee shop author's real reader wasn't "anyone who wants a second chance." It was closer to: someone who got through the acute crisis and is now standing in the rubble of their old life, feeling functional but unmoored, wondering what to rebuild first. That person has a specific problem. They've probably already read the grief memoirs and the resilience books and are looking for something that starts where those left off.
That's a reader. You can write to that person.
The shelf test
Here's a framework I keep coming back to: the shelf test. Walk into a bookstore and find where your book would live. Not where you'd like it to live. Where a bookseller would actually put it.
Now look at what's on either side of it. Those are the books your reader read before yours, or the books they'll pick up if yours isn't available. They've been shaped by that conversation. Your book is joining a conversation already in progress.
The shelf test does something that demographic research and aspiration mapping can't: it puts your book in a physical relationship with other books and asks you to account for that relationship. Who comes to this shelf? What are they looking for when they arrive? What do they already know, and what do they still need?
When I wrote The $100 Startup, the shelf test would have placed it somewhere between lifestyle business memoirs and personal finance — but the reader I had in mind wasn't satisfied by either category. The personal finance books told people to cut expenses and invest for retirement. The memoirs told inspiring stories without much instruction. My reader had a specific gap: they wanted the how, with real numbers, from people who weren't tech founders or venture-backed. That gap defined the book more clearly than any demographic profile could have.
Run the shelf test on your book. Then ask: who comes to this shelf, what did they read last, and what conversation are they still having when they pick yours up?
The conversation already in their head
For Born for This, my reader wasn't someone who'd never thought about their career. They'd thought about it constantly — they'd been told to follow their passion, and that hadn't worked, or they were so multi-interested that the passion advice made them feel more stuck. My book walked into that specific frustration. Knowing that shaped everything from the opening pages to the chapter order.
This is where the audience question connects directly to structure. Once you know what your reader has already tried and where they got stuck, you know what to address first, what to skip, what deserves a full chapter and what deserves a paragraph. It feeds directly into how you build the book — I cover the structural side of this in the article on books that market themselves.
Getting specific enough to be useful
Here's what a useful answer to "who is my book for" looks like in practice: a specific situation the reader is in right now, plus the gap or frustration that's still open after everything they've already tried.
For the coffee shop author, a useful answer might have been: "Someone who survived a health crisis, has done the emotional processing work, and is now trying to figure out what their practical life looks like going forward — and hasn't found a book that starts at that specific moment."
That's a person. You can find that person. You can write the first sentence of your book for that person, and when they read it, they'll feel like the book was written specifically for them — because it was.
Running the shelf test gets you to the right neighborhood. Understanding the conversation already in their head gets you the rest of the way. One reader who feels seen is worth a hundred who vaguely relate.
If you want the full framework for thinking through reader, positioning, and the structural decisions that follow, it's in Books That Sell.
The reader question shapes everything that follows.
Books That Sell covers how to get specific about your reader — and how that specificity shapes the structure, title, and positioning of the whole book.
Get the Guide →