How to Become the Trusted Name in Your Niche by Publishing What You Know
Mat Siems · 7 min read · from The Authority Book
Most advice on becoming known in a field is about volume: post more, speak more, be seen more. This article takes a narrower view. Trust comes from being checkable. If a stranger can read your thinking at length, test it against their own problem and find it holds, they will trust you before they have met you.
What follows is a practical account of how that works for consultants, coaches, agencies and other expert-led firms. The quotations come from my book The Authority Book.
The decision is made before the call
Most buying decisions are made in a room you are not in. A prospect hears your name from a colleague, looks you up on a Tuesday evening and reads whatever you have left lying about on the internet. By the time they book a call, the call is mostly a confirmation. You are being checked against an impression that has already set.
So the useful question is what they found. For most firms the answer is a services page or a capabilities deck: what you do, who you have done it for, and a few phrases about passion and partnership. It is read once, by someone already half-interested, and filed with every other brochure they have been sent.
A brochure asks to be believed. A book lets itself be checked.
The difference is in what the reader can do with it. A claim needs someone willing to take your word. A long, specific piece of writing can be tested: the reader looks for their own problem in it and sees whether your answer is any good. Every entry a prospect reads is also a question you do not have to answer on the call.
The trouble is that most expertise cannot be seen from outside, and shyness has little to do with it. It lives in the expert's head, in hundreds of emails sent to individual clients, in calls nobody recorded, and in decisions that seemed too obvious to explain.
From the outside, expertise that cannot be seen is indistinguishable from no expertise at all. A buyer comparing three firms cannot tell which one has solved their problem forty times, because all three have a tidy website that says roughly the same thing.
Publishing fixes this, but only if what you publish stays put. Most marketing evaporates. A post is seen for a day, a talk is remembered for a week, a campaign stops when the budget does. A substantial piece of work with your name on it is an asset. It needs maintaining, not feeding, and maintenance can be done quarterly.
Pick a narrow reader and make one promise
The most common mistake is writing for everyone. A book on better leadership or growing your business has an enormous potential audience, and nobody in it recognises the book as being for them. Narrow down until you can describe one recognisable buyer with one pain.
Then check who that reader is. Experts tend to write for other experts, because those are the people whose respect they want and whose critique they fear. The result impresses peers and loses clients. Write for the person with the problem and the person who signs it off, who are often not the same.
Next comes the promise line: one sentence saying what the reader will be able to do after reading that they could not do before. It is not a tagline or a list of topics. If you cannot promise something, you are clearing a drawer.
Two further choices sharpen it.
Title. Clever titles work on people who already know what the book is about. Your buyers are the other group. A title is a signpost.
Angle. Every field has things its practitioners agree on privately and avoid saying in public. That is usually the book. Information is free, and an AI assistant can summarise the standard advice in seconds. What cannot be copied is a point of view that sits where your experience and your opinions overlap.
Before committing, write ten entries and show them to real readers. It is the cheapest test available, and it saves you from finding out months later that the promise does not land.
You have already written most of it
The daunting part is the blank list. A hundred entries sounds like a mountain. In practice the difficulty is retrieval, because expertise is stored as answers waiting for questions.
You have been writing your book for years. You just kept sending it to one person at a time.
Four places to look:
Your sent folder. Every long email in which you explained something to a client, advised a colleague or argued for an approach is a candidate entry. Almost none of them has been read by more than one person.
Repeated client questions. Any question a client asks more than once marks a point where buyers get stuck. That is where your writing can help them.
Call transcripts. Many experts speak better than they write. Faced with a confused client, they find the plain sentence and the right example. Capture that and edit it.
Your mistakes inventory. Success stories depend on timing and luck. Failures repeat, across different people and different firms, and someone who has seen them many times can steer others around them.
Combine everything into one long list and aim for three hundred candidates. You cannot choose the best hundred from a hundred. Then cull, look for the stages of the buyer's journey that are thin, and fill them. If you honestly land at sixty-five good entries, that is a message about scope, and padding will not fix it.
Why a hundred at all? Ten is a tip sheet. A hundred is a body of work. Ten parts of ten entries is also a structure readers can find their way around.
Make it worth trusting
A few rules decide whether the finished thing builds trust or spends it.
One entry, one lesson. Each entry should teach one thing a reader could use this week. If they could not act on it, it was an essay.
Be generous. The usual fear is that printing the method leaves nothing to sell. It is almost entirely unfounded. The book gives away knowing what to do. Your services sell getting it done.
Give away the map. They will still want a guide.
Use AI for drafts, not decisions. Once you have a brief, a voice file and a locked outline, an agent can draft quickly, and that changes what is possible for busy experts. The risk is anonymity: competent, balanced prose that sounds like nobody in particular. Work one part at a time, edit every entry, and say openly how the book was made. Hidden help looks like a secret. Disclosed help looks like a method.
Check the fluent parts. AI-drafted prose reads just as smoothly when it is wrong. Numbers, quotes and regulations are the places to look. Readers forgive uncertainty. They do not forgive being misled.
Cut the generic sentence. If a sentence would survive being moved to someone else's book, it does not belong in yours.
Make it look like a book. Decks are skimmed and forgotten. Comfortable body text matters more than any other design choice, and the less it resembles marketing, the more it is trusted.
Hand it to people, one at a time
The instinct on finishing is to announce it to the world. The world is busy and has not been waiting. Launch to a room instead. The first fifty readers matter more than the next five thousand: they set the book's reputation, shape the next edition and start the chain of recommendations. Choose them, and send each a personal note. A mass email is a broadcast, and a personal note is a knock on the door.
On whether to ask for an email address, a mixture works for most: leave it open where discovery matters, and ask for a name only from readers who want to stay.
In sales, the simplest use is the most effective. When a prospect books time, send the book, or a few chosen entries, before the call. The conversation then starts somewhere more useful.
Two cautions. Ask every new client how they found you, or you will credit whatever you happened to do last. And be clear about the limits. A book opens the door. You still have to walk through it, and the work behind it still has to be good.
What to take from this
- Buyers form a view before they speak to you. What matters is what they can read and check.
- Expertise kept in your head, your inbox and your calls is invisible from outside.
- Write for one narrow reader, with one promise and a point of view.
- Your sent folder, repeated client questions, transcripts and mistakes already hold most of the material.
- Build a long list, then cull. One entry, one usable lesson.
- Let agents draft and keep the decisions. Check facts and disclose the method.
- Launch to fifty chosen readers, and send the work before the first call.
If you want the full method, The Authority Book: How a 100-entry book wins clients covers the niche, the hundred entries, structure, production with AI agents, design, editions, launch and the sales conversation, in 100 short chapters with a labelled diagram in each. It is a 314-page PDF and costs £9 on Gumroad: https://matsiems.com/books/the-authority-book.
Running several projects with AI agents? The Unbothered Machine is the operating manual for a company of one.