TL;DR: Casual conversation treats memoir, autobiography and biography as the same thing, but each has its own structural requirements, reader expectations and market, and my memoir process depends on knowing which one you’re writing. I’ve written about one example, a lifelong-dream memoir.
What is the difference between memoir, autobiography and biography?
I want every life-story client to settle this before the first interview.
Picking the wrong form is a mistake nobody notices until the book is finished and the readers who picked it up feel cheated, and by then there’s no cheap way to fix it. People use the three words as if they meant the same thing. They don’t, and the difference decides what kind of book you end up holding.
A memoir is a book by the author about a specific theme, period, or thread of the author’s life, told in scene and reflection, with literary technique.
A memoir doesn’t try to cover the whole life. It picks a narrow piece of it and goes deep. For more, see co-author versus hire a ghostwriter and Writing about family in a memoir without a lawsuit or a family rupture.
The reader’s experience is being inside the author’s specific perspective on the chosen material. A memoir of a difficult marriage. A memoir of caring for a dying parent. A memoir of building and losing a company. Each selects a piece of the life and works it deeply.
An autobiography is a book by the author about the author’s whole life, told more or less chronologically, with the goal of producing a full record.
The reader’s experience is following the trajectory of a life from beginning to current present. Structure is biographical instead of thematic. Readers expect breadth over depth, completeness over selection, the facts and arc of an interesting life from childhood onward.
A biography is a book about a person other than the author, researched and written by the author. The author isn’t the subject. The reader’s experience is learning about someone the author has investigated, with the author as guide and analyst instead of as the focus. Biographies can be authorized, where the subject cooperates with the author, or unauthorized, where the author works from public records and interviews with third parties.
| Question | Memoir | Autobiography | Biography |
|---|---|---|---|
| Who is the subject | The author | The author | Someone other than the author |
| Scope | One theme, period or thread | The whole life | A portrait of the subject |
| Structure | Thematic, told in scene and reflection | Chronological, chapters follow time | Organized from research |
| What it demands | Narrow scope, depth, honesty about harder material | Completeness across many topics, often longer | Public records, interviews, archives, fairness |
| Usual readers | General readers | Readers drawn to a notable life, or family | Readers expecting a reliable, fair portrait |
| When the form is wrong | Feels padded if it becomes autobiography | Feels incomplete if it becomes memoir | Feels oddly distanced if written about yourself |
What does memoir require?
Memoir requires three things many authors don’t realize when they start.
First, the willingness to narrow the scope to a specific theme or period and leave the rest of your life out of the book. The memoir about your marriage doesn’t also cover your career. The memoir about your career doesn’t also cover your divorce, except where the divorce affected the career arc.
Second, the willingness to go deep on narrow material. That means writing in scenes, including the detail, and putting yourself on the page in ways your professional self would normally edit out. Third, the willingness to be honest about the harder material, because memoir without the harder material reads flat.
Many authors who say they want to write a memoir want an autobiography. The signs are wanting to cover the whole life, wanting every notable event in it, and fighting the narrowing the form requires. That preference is fine with me.
It goes wrong when nobody tells the author which book they’re really writing, so an autobiography goes out labeled as a memoir and disappoints the readers it was pitched to. Name the form correctly and the book can succeed in its own category.
What autobiography requires
Autobiography requires the completeness memoir refuses. The author covers childhood, formative experiences, career, relationships, achievements, setbacks, and the arc of the whole life through to the present. Structurally biographical, the work has chapters that follow time instead of theme.
The author has to be willing to include material across many topics instead of going deep on one or two. The work is often longer than memoir, sometimes considerably.
The market for autobiography is real but different from memoir. Autobiographies sell to readers interested in that person’s life as a whole. That usually requires fame, a notable career, or an unusual life in some other sense. The reader is committing to spending time with the full arc of someone’s life. The hook is the life itself instead of the literary handling.
Authors who aren’t famous or notable can still write autobiographies, but the audience is usually family, descendants, and a small circle of people interested in that person. That’s a legitimate purpose and a defensible reason to write the book. It’s not the same business case as a memoir aimed at general readers.
I’d never talk someone out of that book. A full-life autobiography written for children and grandchildren is among the most worthwhile things a person can leave behind, and dismissing it because it won’t hit a bestseller list is snobbery. Its readers are the family, and they’ll never care how it ranked.
What biography requires
From Author Talks
Diana Rubino writes biographical fiction built entirely from real figures, and found Richard III through a book shelved in the wrong spot at her library thirty years ago. She explained the approach on Author Talks.
Biography by an author about someone else is a research project in a way the other two aren’t. The author has to gather material from public records, interviews, archives, and other sources, and then organize it into a portrait of the subject. Journalistic instead of personal, the work has the author render the subject accurately instead of express the author’s own perspective. The reader expects the author to be reliable, the research to be thorough, and the portrait to be fair.
Some books sit right on the line between forms. I’ve written memoirs from a deceased subject’s papers by interviewing the family, and a book like that needs the biographer’s discipline even when it speaks in the subject’s voice. Family memory is generous and sometimes wrong, and I want the papers keeping the book honest where the stories drift.
The form is suitable when the author has access to a subject worth writing about and the skill to do the research and rendering.
Family memory is generous and sometimes wrong, and I want the papers keeping the book honest where the stories drift.
Most ghostwriting clients are asking for memoir or autobiography about themselves, sometimes mistakenly called biography in casual conversation. If the project you have in mind is about you, you’re writing memoir or autobiography. If the project is about someone else and you’re the writer doing the work, you’re writing biography.
How do you tell which form you should be writing?
Start with the subject. Are you the subject or is someone else? If you’re the subject, you’re writing memoir or autobiography. If someone else is the subject and you’re the author doing the work, you’re writing biography. That settles the first question.
If you’re the subject, the next question is scope. Do you want to cover the whole life chronologically, or a specific thread or period in depth? If chronological and complete, you’re writing autobiography. If thematic and selective, you’re writing memoir. Authors who want both should consider whether the project is two books instead of one, because trying to do both in a single book usually produces a long manuscript that does neither form well.
I’d much prefer to hear this now than at chapter twelve. The author who wants both books in one binding tends to end up with a manuscript that tries to serve every reader and satisfies none of them, and it’s the author who pays for that in wasted months and lost readers.
The third question, mostly for memoir, is which theme to pick.
For more on writing a memoir through grief, see Richard’s interview with Catherine Napoli Bruce. Most authors have several memoirs in them, not just one: the professional career memoir, the marriage memoir, the parenting memoir, the grief memoir. The choice of one to write well is the move that produces a book that works. The Book Discovery Intensive handles exactly this question of theme selection, where the working interviews surface which thread of the life carries a full book.
My take
Settle the form before you write a word. If you’re the subject and want your entire life in order, that’s autobiography. A single thread or period told in depth is memoir. Someone else’s life is biography. If you want both memoir and autobiography, plan two books, because one volume that tries to cover a full life and go deep on one period does neither well. Then pick one theme, since most people have several memoirs in them.
Why does choosing the wrong form hurt a life-story book?
Authors who try to write memoir but produce autobiography end up with books that feel padded, because memoir-thematic discipline is missing and the broad biographical material reads thin without it. Writers attempting autobiography but producing memoir end up with books that feel incomplete, because readers expecting the full life arc keep waiting for the chapter that never comes. Anyone trying to write biography about themselves ends up with books that feel oddly distanced, because the form requires journalistic remove and the material is too personal for the remove to feel right.
Pick the form deliberately before the project starts and write to it: memoir on one theme with depth, autobiography on the whole life with full coverage, biography on someone else with research and care. I don’t have much sympathy for the hedge, the book that tries to be all three so the author never has to give anything up. It wastes the author’s time and shortchanges the reader, and each of these forms deserves a writer who’s committed to it.
Step one is knowing which book you’re writing. The Ghostwriting Advantage covers how to get that book written for you by someone who shapes the narrative arc.
