Ask someone what they could put in a book, and they may struggle to answer. Ask them about a mistake they would never make again, and an hour can disappear.
The material is often easier to recognize in conversation than it is on a blank page.
You may be looking for something that already resembles a manuscript: a collection of essays, a detailed outline, years of organized notes. Those can help. But much of what belongs in your book may still live in your memory, your work, and the explanations you give when someone needs your help.
The question is whether that material has enough depth to reward a reader’s time.
Look for what sits behind your advice
Take something you regularly tell people. It might be a principle you use in your business or advice you give someone facing a difficult decision.
Now consider what you would need to explain for a reader to use it well.
How did you learn it? When has it helped? When has following it been difficult? Have you ever taken it too far? What would someone misunderstand if they heard only the advice and none of the experience behind it?
Those answers begin to reveal the depth of your material.
“Hire people you trust” is a sentence. Explaining how you learned to recognize trustworthiness, what you once confused it with, and how your hiring changed gives a reader something to work with.
Different stories need to contribute different things
You may have twenty stories that illustrate the same lesson. The strongest one could be enough.
A book develops as each chapter gives the reader something they didn’t have before. One experience might explain how you formed a conviction. Another might reveal its limits. A third might show what changed when you finally acted on it.
That movement matters. It allows the reader’s understanding to grow instead of encountering the same point in different settings.
A focused area of experience can hold considerable depth. Years spent solving one difficult kind of problem may give you more useful material than a much broader account of everything you’ve done.
Try a small inventory
Before worrying about chapters or word count, set aside some time to make three short lists:
Questions people repeatedly ask you. Include the ones you find easy to answer. Your familiarity with a subject can hide how much you know.
Experiences that changed your mind. Look for moments when what happened forced you to reconsider what you believed.
Things you now do differently. Note the decisions, habits, or practices that came directly from those experiences.
Then choose one item and talk it through with someone curious. Let them interrupt. Notice where they ask for an example, where you need to explain the background, and where you find yourself saying, “There’s a story behind that.”
You’re beginning to see what the material contains. You’re also discovering which questions make it come alive.
Gaps are useful information
You don’t need every detail in hand before beginning. A missing date can be checked. A former colleague may offer another perspective on a conversation. Records, presentations, correspondence, and other source material can help you recover and verify what matters.
Other gaps deserve more thought. You may have a strong opinion with little experience to support it. A story may still be unfolding, leaving you too close to it to understand what it means. An idea may be useful but better suited to an article or a talk.
Recognizing that early helps you choose the right form for the work. It also keeps you from stretching a good idea until it loses its force.
You don’t have to assess it alone
An experienced writing partner can help you recognize the difference between material that is familiar to you and material that will be valuable to a reader.
Through questions, close listening, and an examination of your source material, a clearer picture emerges: what has depth, what needs further exploration, and whether it adds up to a book with a clear purpose.
You may discover that you have more than you realize. You may find a smaller, more focused book than the one you imagined. Either way, the goal is a book whose pages earn their place.
Start with the question someone keeps asking you. Give the answer you usually give them.
Then invite the next question.