How to Start Writing a Nonfiction Book (When You Don’t Know Where to Start)

You have a book in you. Maybe it's a memoir that's been knocking around in your head for years. Maybe it's a guide built from the kind of expertise people keep asking you to share. Or maybe someone recently said, "You really should write a book about that"—and this time, you didn't laugh it off.

So you know you want to write this book. You just have no idea how to take what’s in your head—the life story, the hard-won expertise, the thing you keep meaning to put on paper—and turn it into a publishable manuscript. 

I’ve spent close to a decade editing nonfiction. Memoirs, business books, self-help guides, the occasional white paper on something obscure (yes, I once edited a piece on land surveying)—and pretty much everything in between. What I’ve seen over and over is the difference between writers who finish and writers who don’t. And it comes down to this: it isn’t talent or having more time (nobody has more time). It’s having a process and being willing to follow it on the days you’d rather scrub grout. 

Let’s get to work.

Get Clear on Your Why (Before You Write a Word)

Before you open a blank document, you need to answer one question: Why this book?

This isn't a fluffy exercise. Your "why" will carry you through the moments you want to quit—and trust me, those moments will come. Maybe you’re writing to share expertise that could genuinely help people. Maybe you’re trying to make sense of your own experience. Maybe it’s about establishing authority in your field or leaving something behind for your kids. There's no wrong answer here. But there needs to be an answer. A book is a serious undertaking, and vague motivation produces abandoned manuscripts.

Once you're clear on your why, get equally clear on your who. Who is your ideal reader? Not "everyone interested in this topic"—that's a non-answer, and it'll paralyze you every time you sit down to write. Get specific. Picture one person. What do they already know, and where are they stuck? What can your book give them that Google can't? Write for that person and that person alone. Everything else—what to include, what to cut, how to structure the whole thing—falls into place once you know exactly who you're talking to.

Start With Structure, Not Sentences

Here's a mistake I see constantly: writers sit down and try to write their book from the beginning, one sentence at a time, hoping it will all come together somehow. That approach seldom works for nonfiction. You end up meandering, repeating yourself, or realizing 30,000 words in, your structure doesn't hold together.

Instead, start with an outline. I know—outlining sounds tedious. But think of it as building a frame before you hang the drywall. You need to know where the load-bearing walls go.

For most nonfiction, this means pinning down your core argument or throughline, then breaking it into major sections or chapters. Each chapter should have its own mini-argument that supports the larger one. Ask yourself what your reader needs to understand first, what builds on that, and where it all naturally leads.

Your outline doesn't need to be elaborate. A list of chapter titles with a few bullet points under each is often enough to get started. You can—and will—revise it as you go. You’re not locking yourself. You’re giving yourself a map so you're not wandering in the dark.

Write the Messy First Draft

Now comes the part everyone dreads: actually writing.

Here's what I want you to internalize before you begin: your first draft is supposed to be bad. Anne Lamott calls it the "shitty first draft" in her essential book Bird by Bird, and she's being literal. The purpose of a first draft isn't to be good—it's to exist. A messy draft gives you something to work with. A blank page gives you nothing.

This is where most writers get stuck. You write a paragraph, hate it, and delete the whole thing. Or you start editing as you go—polishing sentences that might not even survive the next revision, which is its own kind of trap. Underneath all of it is perfectionism dressed up as high standards. It isn't. It's fear.

Give yourself permission to write badly. I mean it. Get the ideas out of your head and onto the page—clumsy, repetitive, wrong-word-three-times-in-one-paragraph bad. Whole sections can be placeholders. That's fine. You're not carving marble here; you're making clay. The shaping comes later.

Pick a daily word count that doesn't make you want to quit before you start. Even 300 words adds up. Then protect that writing time—don't negotiate with yourself about it. Consistency gets you further than inspiration every single time. As Stephen King puts it, the muse visits during the act of writing, not before it.

Revise With Fresh Eyes

Once you have a complete draft—and I mean complete, beginning to end, however rough—walk away from it. Seriously. A week minimum, two if you can manage it. You need distance to read what you actually wrote instead of what you think you wrote.

When you come back, read the whole thing through in one sitting if you can. Don't edit. Don't fix. Just read and take notes—where did you lose interest, where were you confused, where did something feel thin? Structural problems are almost impossible to see when you're in the weeds. This is how you get out of them.

Then start revising—and be ruthless. Cut the parts that don't serve your reader, even if you love them. Tighten the sections that ramble. Fill in the gaps you glossed over in your rush to finish. This is where good writing actually happens. First drafts are about getting it down. Revision is where the actual writing happens.

Watch for the issues that show up in nearly every nonfiction draft I edit: overwriting, vague language, weak transitions, and burying your main points under too much setup. These aren't personal failings—they're just part of the craft, and once you know to look for them, you can catch them yourself.

Know When You Need Help

At some point, you'll hit the limits of what you can see in your own work—and that's true for every writer, regardless of experience. 

But here's something most writers don't realize: there are different types of editing for various stages of a manuscript. Developmental editing looks at the big picture—structure, argument, whether the book holds together as a whole. Line editing works at the sentence level, refining voice, clarity, and rhythm. Copy editing handles grammar, consistency, and mechanics. Proofreading is the final polish before publication. 

Each one serves a different purpose, and hiring the wrong service at the wrong stage is one of the most common (and most expensive) mistakes I see writers make. More on that in a future post—for now, just know that getting clear on what your manuscript actually needs is the first step.

The Truth About Finishing

Here's what I've learned after close to a decade in this work: finishing a manuscript has almost nothing to do with confidence. It has everything to do with showing up when you don't have any.

Writing a nonfiction book is hard. There will be days when you're convinced the whole thing is garbage, weeks when you'd rather do literally anything else. That inner critic will get loud. Imposter syndrome will remind you that you have no business writing this book.

Those feelings are normal—I'd be more worried if you didn't have them. They're not a sign you're failing. They're a sign you care about getting it right. Hear the voice, acknowledge it, and get back to work anyway.

You’ve got everything you need. Start a new document.

Ready for the Next Step?

If you've started your manuscript and want a professional perspective on where it stands—or you're not sure what kind of editing support would move your work forward—reach out. No pressure, no judgment. Just a conversation about your writing and how to help you say exactly what you mean.