How to write a Book in 100 Days: A Complete Beginner’s Roadmap

Writing a book sounds like a dream reserved for bestselling authors, literary geniuses, or people with unlimited free time. But what if you could do it too—in just 100 days?

Yes, it’s possible. Even if you’ve never written more than a few pages before, even if you have a full-time job, even if you doubt your abilities, you can write a book in 100 days with the right plan.

This guide isn’t just motivational fluff. It’s a step-by-step roadmap designed for beginners, built on structure, discipline, and simplicity. By following this plan, you’ll transform your book idea into a real, finished draft in just over three months.

Let’s begin your journey.

Phase 1: Days 1–10 — Build the Foundation

Before you start typing chapters, you need a strong base. These first 10 days are about defining your purpose and building your writing plan.

1. Clarify Your Why

  • Why do you want to write this book?
  • Is it for personal growth, to help others, to share a story, or to build your brand?
    Knowing your reason keeps you grounded when motivation dips.

2. Choose Your Book Type

  • Fiction: Are you writing a novel, short story collection, or novella?
  • Nonfiction: Are you writing a memoir, how-to guide, or self-help book?

Be specific—this decision shapes everything that follows.

3. Identify Your Readers

Who will benefit from or enjoy your book?

  • What do they care about?
  • What problems do they face?
  • What tone or language will they connect with?

4. Draft a One-Sentence Summary

Try this formula:

[Title] is a book about [topic/story], written for [audience], to help them [goal or experience].

This becomes your book’s mission statement.

5. Set Your Word Count Goal

Most first-time books range between 40,000–60,000 words. For example:

  • Fiction (novel): ~60,000 words
  • Nonfiction guide: ~40,000–50,000 words

Let’s say you aim for 50,000 words. Spread over 100 days, that’s just 500 words per day—manageable even on a tight schedule.

Phase 2: Days 11–20 — Plan Your Content

Planning saves you from getting stuck halfway through. A flexible outline keeps your writing on track.

1. Create a Simple Outline

Whether fiction or nonfiction, break your book into major parts:

  • For nonfiction: list chapters and key lessons or sections.
  • For fiction: sketch your beginning, middle, climax, and ending.

Don’t worry about perfection—just capture the big picture.

2. Break it Down Further

Under each part or chapter, list bullet points:

  • What stories, facts, or arguments belong here?
  • What questions should be answered?

This turns your outline into a series of easy-to-follow writing prompts.

  1. Set a Writing Schedule

Choose your preferred writing time: early morning, evening, or lunch breaks?

  • Write 5–6 days a week.
  • Aim for 500–700 words per session.

Consistency matters more than speed.

Phase 3: Days 21–80 — Write the First Draft

Now it’s time to write! This 60-day stretch is the heart of your journey.

1. Write First, Edit Later

Don’t stop to fix typos or polish paragraphs. Your focus is on progress, not perfection.
Let the words flow.

2. Create a Writing Ritual

Make writing part of your daily rhythm.

  • Same time, same place
  • A warm drink, a timer, music, or silence—whatever helps you focus

3. Track Your Progress

Use a journal, spreadsheet, or even a word-count thermometer.
Celebrate each milestone: 10k, 25k, 40k…

4. Push Through Resistance

You’ll have bad days. You’ll doubt your story. Write anyway.
Remind yourself: the draft doesn’t need to be perfect—it just needs to be written.

Phase 4: Days 81–90 — Revise and Refine

Once your draft is complete, don’t dive into editing right away. Take a 2–3-day break, then return with fresh eyes.

1. Read Like a Reader

Print your draft or read it on a different device.
Highlight what stands out—both good and bad.

Ask yourself:

  • Does the story or argument flow?
  • Are there boring or confusing parts?
  • What needs to be cut or expanded?

2. Restructure Where Needed

Don’t be afraid to:

  • Rearrange chapters or sections
  • Combine or cut weak content
  • Strengthen your opening or ending

Your goal is to shape your ideas into a smooth, clear experience.

Phase 5: Days 91–97 — Edit for Clarity and Style

Now that your content is solid, focus on line-by-line improvement.

1. Polish Your Sentences

  • Cut unnecessary words
  • Use active voice
  • Strengthen weak verbs
  • Clarify any confusing language

2. Use Editing Tools

Helpful software:

  • Grammarly (grammar/spelling)
  • Hemingway Editor (readability)
  • ProWritingAid (in-depth style suggestions)

But also: read aloud. You’ll catch awkward phrasing and unnatural flow.

Phase 6: Days 98–100 — Feedback and Final Touches

You’re almost there!

1. Get Outside Feedback

Send your draft to 2–3 trusted beta readers or writers. Choose people who:

  • Understand your genre
  • Can give honest, constructive feedback

Ask focused questions:

  • What parts were confusing?
  • What did you enjoy most?
  • Where did the pacing drag?

2. Final Adjustments

Incorporate helpful suggestions without losing your voice.
Fix any lingering typos or structural issues.

3. Choose Your Next Step

Now decide what to do with your finished book:

  • Self-publish on platforms like Amazon KDP
  • Query agents if seeking traditional publishing
  • Hire a professional editor or cover designer if you’re moving forward professionally

Either way, you wrote a book.

Your 100-Day Writing Journey: A Snapshot

 

Timeline Action Result
Days 1–10 Define an idea, outline a plan Clarity and direction
Days 11–20 Build outline, set goals Writing structure
Days 21–80 Daily writing sessions Full first draft
Days 81–90 Self-review and major edits Stronger narrative or content
Days 91–97 Sentence-level editing Cleaner, clearer writing
Days 98–100 Feedback + Final polish Ready to publish or pitch

 

Mistakes to Avoid on This Journey

  • Waiting for the “perfect” idea – Just start with what excites you.
  • Writing without a plan – Outlining saves you from getting lost.
  • Over-editing as you write – First drafts are meant to be rough.
  • Not asking for feedback – Others can help you see blind spots.
  • Rushing to publish – Editing is where the magic happens.

FAQs: Writing a Book in 100 Days

Do I need to write every single day?

Not necessarily. Write 5–6 days per week, but stick to your weekly word goal.

What if I fall behind schedule?

Use weekends to catch up. You can also reduce your final word count slightly—many great books are under 50,000 words.

Can I use AI tools to assist?

Yes, for brainstorming, outlining, or editing—but always maintain your unique voice.

Is 100 days realistic for a beginner?

Absolutely. With 500 words per day, it’s doable. The trick is consistency.

Final Thoughts: One Chapter at a Time

Writing a book in 100 days isn’t about speed—it’s about steady progress. It’s about trusting the process, showing up even on tough days, and proving to yourself that your story matters.

Don’t wait for “someday.”

Start today.

Your book is already inside you—all you need is 100 days to bring it to life.

View All Blogs
Activate Your Coupon
We want to hear about your book idea, get to know you, and answer any questions you have about the bookwriting and editing process.