I Know How She Does It: How Successful Women Make the Most of Their Time book cover

I Know How She Does It

How Successful Women Make the Most of Their Time

Laura Vanderkam
3.73 (5259 Reviews)

Overview of I Know How She Does It

Discover how high-earning mothers balance success with life. Based on 143 time logs, Vanderkam reveals counterintuitive findings: these women average 7.7 hours of sleep and 3.3 hours of weekly exercise. Endorsed by Gretchen Rubin, who claims it transformed her calendar perspective forever.

Key Themes in I Know How She Does It

  • time tracking
  • 168 hour week
  • mosaic project
  • female executive lifestyle
  • work-life integration

Quotes from I Know How She Does It

  • I truly believe that if we can understand where our time is really going, we can live the lives we want.

  • Time is elastic; we lengthen it by filling it.

  • Quality trumps quantity.

  • Flexibility matters more than strict hour limits.

  • Be bold.

Characters in I Know How She Does It

  • Laura VanderkamAuthor and researcher of the Mosaic Project
  • Vanessa ChanConsulting partner and mother used as a case study

About the Author

About the Author of I Know How She Does It

Laura Vanderkam, bestselling author of I Know How She Does It and renowned time management expert, combines data-driven insights with practical strategies for achieving work-life balance.

A Princeton University graduate, Vanderkam built her expertise through years of researching how high-achieving professionals allocate their 168 weekly hours, culminating in her groundbreaking time diary study featured in this book.

Her work has appeared in The Wall Street Journal, The New York Times, and Fortune, and she co-hosts the Best of Both Worlds podcast, offering actionable advice for balancing career ambitions with personal fulfillment. Vanderkam’s influential TED Talk, “How to Gain Control of Your Free Time,” has been viewed over 5 million times, cementing her status as a leading voice in productivity literature.

Her other bestselling titles, including 168 Hours and What the Most Successful People Do Before Breakfast, provide complementary frameworks for maximizing personal and professional potential. A mother of five and avid runner, Vanderkam’s strategies are tested in real-world chaos, making her advice both relatable and scalable.

Translated into 12 languages, her books have empowered readers worldwide to rethink time scarcity and reclaim control of their schedules.

Download Summary of I Know How She Does It

Get the I Know How She Does It summary as a free PDF or EPUB. Print it or read offline anytime.

FAQs About This Book

I Know How She Does It explores how successful women balance careers and personal lives through time management strategies. Based on a study of 1,001 days in the lives of professional women, Vanderkam challenges the "overwhelmed working mom" narrative, emphasizing intentional scheduling, prioritizing joy, and redefining productivity. Key concepts include time-tracking, flexible work hours, and leveraging small moments for meaningful tasks.

This book is ideal for working mothers, career-driven professionals, and anyone seeking actionable strategies to manage time effectively. It’s particularly valuable for those feeling stretched thin between work and family, as Vanderkam provides data-driven insights and real-life examples to reframe productivity without guilt.

Yes, for its evidence-based approach to time management. Vanderkam combines research with relatable anecdotes, offering tools like the "time diary" method and advocating for flexibility over rigid routines. Critics note some advice may overlook systemic workplace challenges, but the book remains a refreshing, optimistic guide for reclaiming control over schedules.

Vanderkam emphasizes tracking time to identify inefficiencies, scheduling leisure and family time first, and breaking tasks into small, manageable steps. She advocates "time-blocking" for high-priority goals and leveraging mornings for focused work. The book also highlights outsourcing non-essential tasks and embracing flexible work arrangements.

Vanderkam disputes the idea that working mothers are perpetually overwhelmed, arguing that many thrive by prioritizing what matters. She uses time diaries to show how women allocate hours to career, family, and self-care, proving it’s possible to excel without sacrificing joy. Her approach encourages readers to reject societal guilt and design their own schedules.

The "168-hour framework" (from Vanderkam’s earlier book 168 Hours) refers to optimizing the 168 hours in a week. In I Know How She Does It, she applies this by urging readers to audit their time, eliminate low-value activities, and allocate hours intentionally to professional growth, relationships, and personal well-being.

Some critics argue Vanderkam’s advice assumes privilege (e.g., flexible jobs, childcare access) and downplays systemic barriers. Others find her tone overly optimistic or repetitive. However, supporters appreciate her focus on agency and practical solutions, making it a divisive yet impactful read.

Unlike Off the Clock (focusing on leisure) or Tranquility by Tuesday (stress reduction), this book specifically targets working mothers. It builds on her time-management principles but adds a data-driven lens through real women’s schedules, offering more tactical advice for balancing career and family.

  • “You have more time than you think.”
  • “Busyness is not the price of success.”
  • “The world won’t end if you don’t answer every email.”

These quotes reinforce Vanderkam’s themes of intentionality, rejecting perfectionism, and prioritizing meaningful tasks over false urgency.

Vanderkam’s strategies align with remote work by advocating for structured flexibility, setting boundaries between work and personal time, and using saved commuting hours for hobbies or family. Her emphasis on outcome-based productivity (vs. hours logged) resonates in hybrid work environments.

As workplace flexibility evolves, Vanderkam’s focus on customized schedules and rejecting burnout culture remains timely. The book’s principles help navigate post-pandemic work norms, AI-driven efficiency tools, and the growing demand for holistic productivity frameworks.

Pair it with Atomic Habits for habit-building, Essentialism for prioritization, or Vanderkam’s Juliet’s School of Possibilities for fictionalized time-management lessons. These reads collectively address mindset shifts, practical strategies, and balancing ambition with well-being.

Explore Your Way of Learning

I Know How She Does It isn't just a book — it's a masterclass in Productivity. To help you absorb its lessons in the way that works best for you, we offer five unique learning modes. Whether you're a deep thinker, a fast learner, or a story lover, there's a mode designed to fit your style.

Quick Summary Mode

Read or listen to I Know How She Does It Summary in 8 Minutes

Break down key ideas from I Know How She Does It into bite-sized takeaways to understand how innovative teams create, collaborate, and grow.

play
00:00
00:00

Fun Mode

I Know How She Does It Lessons Told Through 21-Min Stories

Experience I Know How She Does It through vivid storytelling that turns innovation lessons into moments you'll remember and apply.

play
00:00
00:00

Personalize Mode

Experience I Know How She Does It in your own learning style

Ask anything, choose your learning style, and co-create insights that truly resonate with you.

Personalize Mode

From Columbia University alumni built in San Francisco

BeFreed Brings Together A Global Community Of 1,000,000 Curious Minds

"Instead of endless scrolling, I just hit play on BeFreed. It saves me so much time."

@Moemenn
platform
star
star
star
star
star

"I never knew where to start with nonfiction—BeFreed’s book lists turned into podcasts gave me a clear path."

@Chloe, Solo founder, LA
platform
comments
12
likes
117

"Perfect balance between learning and entertainment. Finished ‘Thinking, Fast and Slow’ on my commute this week."

@Raaaaaachelw
platform
star
star
star
star
star

"Crazy how much I learned while walking the dog. BeFreed = small habits → big gains."

@Matt, YC alum
platform
comments
12
likes
108

"Reading used to feel like a chore. Now it’s just part of my lifestyle."

@Erin, Investment Banking Associate , NYC
platform
comments
254
likes
17

"Feels effortless compared to reading. I’ve finished 6 books this month already."

@djmikemoore
platform
star
star
star
star
star

"BeFreed turned my guilty doomscrolling into something that feels productive and inspiring."

@Pitiful
platform
comments
96
likes
4.5K

"BeFreed turned my commute into learning time. 20-min podcasts are perfect for finishing books I never had time for."

@SofiaP
platform
star
star
star
star
star

"BeFreed replaced my podcast queue. Imagine Spotify for books — that’s it. 🙌"

@Jaded_Falcon
platform
comments
201
thumbsUp
16

"It is great for me to learn something from the book without reading it."

@OojasSalunke
platform
star
star
star
star
star

"The themed book list podcasts help me connect ideas across authors—like a guided audio journey."

@Leo, Law Student, UPenn
platform
comments
37
likes
483

"Makes me feel smarter every time before going to work"

@Cashflowbubu
platform
star
star
star
star
star

"Instead of endless scrolling, I just hit play on BeFreed. It saves me so much time."

@Moemenn
platform
star
star
star
star
star

"I never knew where to start with nonfiction—BeFreed’s book lists turned into podcasts gave me a clear path."

@Chloe, Solo founder, LA
platform
comments
12
likes
117

"Perfect balance between learning and entertainment. Finished ‘Thinking, Fast and Slow’ on my commute this week."

@Raaaaaachelw
platform
star
star
star
star
star

"Crazy how much I learned while walking the dog. BeFreed = small habits → big gains."

@Matt, YC alum
platform
comments
12
likes
108

"Reading used to feel like a chore. Now it’s just part of my lifestyle."

@Erin, Investment Banking Associate , NYC
platform
comments
254
likes
17

"Feels effortless compared to reading. I’ve finished 6 books this month already."

@djmikemoore
platform
star
star
star
star
star

"BeFreed turned my guilty doomscrolling into something that feels productive and inspiring."

@Pitiful
platform
comments
96
likes
4.5K

"BeFreed turned my commute into learning time. 20-min podcasts are perfect for finishing books I never had time for."

@SofiaP
platform
star
star
star
star
star

"BeFreed replaced my podcast queue. Imagine Spotify for books — that’s it. 🙌"

@Jaded_Falcon
platform
comments
201
thumbsUp
16

"It is great for me to learn something from the book without reading it."

@OojasSalunke
platform
star
star
star
star
star

"The themed book list podcasts help me connect ideas across authors—like a guided audio journey."

@Leo, Law Student, UPenn
platform
comments
37
likes
483

"Makes me feel smarter every time before going to work"

@Cashflowbubu
platform
star
star
star
star
star

"Instead of endless scrolling, I just hit play on BeFreed. It saves me so much time."

@Moemenn
platform
star
star
star
star
star

"I never knew where to start with nonfiction—BeFreed’s book lists turned into podcasts gave me a clear path."

@Chloe, Solo founder, LA
platform
comments
12
likes
117

"Perfect balance between learning and entertainment. Finished ‘Thinking, Fast and Slow’ on my commute this week."

@Raaaaaachelw
platform
star
star
star
star
star

"Crazy how much I learned while walking the dog. BeFreed = small habits → big gains."

@Matt, YC alum
platform
comments
12
likes
108

"Reading used to feel like a chore. Now it’s just part of my lifestyle."

@Erin, Investment Banking Associate , NYC
platform
comments
254
likes
17

"Feels effortless compared to reading. I’ve finished 6 books this month already."

@djmikemoore
platform
star
star
star
star
star

"BeFreed turned my guilty doomscrolling into something that feels productive and inspiring."

@Pitiful
platform
comments
96
likes
4.5K

"BeFreed turned my commute into learning time. 20-min podcasts are perfect for finishing books I never had time for."

@SofiaP
platform
star
star
star
star
star

"BeFreed replaced my podcast queue. Imagine Spotify for books — that’s it. 🙌"

@Jaded_Falcon
platform
comments
201
thumbsUp
16

"It is great for me to learn something from the book without reading it."

@OojasSalunke
platform
star
star
star
star
star

"The themed book list podcasts help me connect ideas across authors—like a guided audio journey."

@Leo, Law Student, UPenn
platform
comments
37
likes
483

"Makes me feel smarter every time before going to work"

@Cashflowbubu
platform
star
star
star
star
star

See More Stories?

How people are talking about BeFreed across the web
1.5K Ratings4.7
Start your learning journey, now