How to Write a Book in 90 Days


Whether you’ve already started writing your book, or you have a book you’ve been planning to write but don’t know where or how to begin, this exercise will help you find your target daily word count and set you up for success to meet your book writing goals much faster.

Step 1: Find the Estimated Word Count of Your Proposed Book

Book lengths vary in great detail from fiction to non-fiction. First, you’ll need to decide what type of book you plan to write so you can find the estimated word count of that particular genre or style. Use the information below to calculate your estimated target daily word count:


Short Stories: 7,500 words or less

Novelette: 7,500—17,500 words

Novella: 17,500—40,000 words

Novel: 40,000—90,000 words (between 50,000—70,000 are average)

Children’s Book: 350—600 words

eBooks: 7,500—50,000 words

Non-fiction: 25,000—70,000 words

What type of book do you plan to write? Based on the information above, how many words do you estimate your book to have upon completion? If you know the answer to those two questions, you can easily map out a plan to finish your book within a designated time frame.

Step 2: Find Your Target Daily Word Count

You can apply this formula to any time frame that feels right for you and your project, but, for now, let’s say you have a goal to complete your book within 90 days. Use the formula below to find your target daily word count. This way you will know exactly how many words you’ll need to write each day to reach your goal.

Estimated word count ______ divided by 90 days = _______Target Daily Word Count

Example: I’m planning a how-to book on Kindle Publishing. I estimate my non-fiction book will be 200 pages. Since I know I average approximately 200-250 words per page, my goal is a minimum of 50,000 words. Now let’s apply it to the formula:

50,000 words divided by 90 days = 555 words per day

There you have it! My target daily word count is 555 words per day. That’s not bad considering that I write an average of 1000 words per hour. I found this average during my 7-Day Writing Challenge to Increase Writing Speed and Unlock Creativity. At this rate, I will only have to write 30 minutes per day to complete the first draft of my book in 90 days! Of course, I will need to set aside time for research, revision, and all the other components that go into crafting a quality book. Therefore, I will set aside a minimum of an hour each day to work on my book.

Step 3: Put Your Goal into Action!

To complete a book in 90 days, you will need to be self-disciplined and committed to the project. Your book isn’t going to write itself, after all. Be sure to schedule your daily writing time on your calendar for 90 days, or whatever projected time frame you decide. If you miss a day, you’ll know exactly how much time you’ll need to make up the following day to stay on track.

If you’re ready to write your book and would like the accountability of a writing coach and a like-minded group of peers who are also working toward the same goal, I invite you to check out my upcoming 8-Week Book Writing Intensive.

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