15 Secrets Successful People Know About Time Management: The Productivity Habits of 7 Billionaires, 13 Olympic Athletes, 29 Straight-A Students, and 239 Entrepreneurs.
Shows how high performers protect their limited minutes and energy. You choose one daily priority, plan it on a calendar instead of a list, limit email and meetings, refuse more requests and guard your first hour.

Table of Content
1. Introduction
57 sec
Most busy people do not lack hours. They lose them a few minutes at a time, to a buzzing phone, a colleague at the desk and an inbox that never empties. In 15 Secrets Successful People Know About Time Management, entrepreneur Kevin Kruse gathers the habits of billionaires, Olympic athletes, straight-A students and hundreds of entrepreneurs, and his first lesson is a number: every day holds 1,440 minutes, and none of them comes back once spent.
His argument grows from there. High performers treat those minutes, and the energy behind them, as a fixed budget. They pick one thing that matters most, give it a place on the calendar and defend it against everything else.
You leave with a working toolkit: a way to choose the day’s priority, a calendar that replaces the list, a rule for email, a way to refuse politely and a morning that gives you energy to spend.
2. Spend your 1,440 minutes on one task first
1 min 38 sec
Kruse keeps a single number taped to his office door, and it changes how he sees every interruption. It also points to the one decision that most shapes a productive day.
3. Swap the endless to-do list for a calendar
1 min 31 sec
Two in five items on a typical to-do list never get done, and the leftovers cost more than time. An Olympic gymnast shows what to use instead.
4. Beat procrastination by picturing your future self
1 min 31 sec
Putting things off feels like a flaw of character, yet Kruse traces it to something easier to fix. Two simple questions and a cleared kitchen shelf are where he begins.
5. Keep your inbox from running your day
1 min 32 sec
Richard Branson once wrote a business idea in his passport. That small act and a slot machine explain two opposite ways your attention is either kept or taken.
6. Shrink meetings and say no without guilt
1 min 38 sec
One tech chief fit up to 70 meetings into a single week without drowning in them. An Olympic rower took the opposite route, and both protected what mattered most.
7. Find the 20 percent of work worth your hours
1 min 32 sec
An Italian economist noticed something odd about the peas in his garden. The same lopsided pattern hides in your weekly tasks, and three questions can free a full working day.
8. Give each day a theme and clear small tasks fast
1 min 32 sec
Jack Dorsey ran two companies at once with a surprisingly simple weekly rhythm. A straight-A student and a family email show the other half of the trick: what to do with tiny jobs.
9. Protect your energy to get more done
1 min 30 sec
One author went from 600 words an hour to 3,500 without adding a single hour to her day. Kruse’s last two habits explain what changed, and it starts before breakfast.
10. Conclusion
1 min 10 sec
Kruse’s billionaires, Olympians and students point to the same picture. Successful people treat the day as a small, fixed budget and spend it deliberately. The to-do list, the always-open inbox and the automatic yes all let someone else decide where the minutes go. The calendar, the MIT, the short standing meeting and the polite refusal take that decision back. And because a tired mind wastes even a well-planned hour, energy sits beneath all of it.
For a place to begin, Kruse recommends a morning routine based on success coach Hal Elrod’s method, known as LIFE S.A.V.E.R.S., which covers time for silence, affirmations of your goals, visualizing the life you want, exercise, reading and writing in a journal. Pair it with one MIT written into tonight’s calendar and three planned email checks. Then, when the next request arrives, ask what it would cost you out of your 1,440.
George W. Bush held one of the busiest jobs in the world and still read 95 books. The minutes were there all along. He simply decided in advance what they were for.
About this book
What is this book about?
Most people do not run out of time all at once. They lose it in small pieces, to a buzzing phone, an interrupting colleague and an inbox that keeps refilling. Kevin Kruse set out to learn how highly successful people stop that leak, drawing on the habits of billionaires, Olympic athletes, straight-A students and entrepreneurs. His answer is fifteen practical habits built on one idea. A day holds only 1,440 minutes, so each one should go to the work that matters most. Kruse shows how to pick a single most important task, replace the to-do list with a calendar, beat procrastination by picturing your future self, limit email with his 321-Zero system, shrink meetings and say no more often. He adds tools for finding the work that pays off most, theming your days, finishing small tasks at once and building energy through a morning routine and the Pomodoro Technique.
Book Information
Who it's for
Interrupted office workers
Office workers whose days disappear into email, meetings and interruptions.
Overloaded founders and managers
Founders and managers juggling too many priorities who want simple rules for choosing and refusing.
Students and new professionals
Students and early-career professionals who want to work fewer scattered hours and finish more.
About the Author
Kevin Kruse
Kevin Kruse is an entrepreneur who built and sold several multimillion-dollar technology companies, which won Inc 500 and Best Place to Work awards. His first venture failed when he was 22, and he kept starting others. He has written several books, including We, which 800-CEO-Read named among the best leadership books of 2011. He contributes to Forbes.com, has published more than 100 articles on leadership, engagement and entrepreneurship, and gives keynote talks around the world.
Ratings & Reviews
Ratings at a glance
What people think
Listeners find this time management guide exceptionally accessible and useful, featuring thoroughly researched material and numerous case studies. This work offers superior methods for managing one’s schedule, such as time-blocking habits, and listeners value its practical tips and inspiring style. It is regarded as a worthwhile asset for growth in both personal and professional spheres.
Top reviews
I honestly wish someone had handed me this book when I first started my career. The concept of the 1,440 minutes—the literal amount of time we have in a day—really stuck with me as a visual. It’s not just another dry lecture on productivity; Kruse uses these great anecdotes from billionaires and Olympic athletes that make the advice feel much more attainable. Personally, I’ve already ditched my traditional to-do list for a calendar-based system, and the difference in my stress levels is night and day. If you’re a procrastinator or just feel like you’re constantly spinning your wheels, this is a must-read. It’s practical, punchy, and doesn't waste your time with unnecessary fluff. The 'touch it once' rule alone saved me about three hours of email dread this week.
Show moreBrilliant and incredibly practical. I’ve read dozens of time management books over the years, and most of them are too complicated to actually use. Kruse keeps it simple. The chapter on the 'Daily Theme' was a game-changer for me as a freelancer. By dedicating specific days to specific types of work, I’ve stopped the constant context-switching that used to drain my brain by 2 PM. I also loved the focus on health and sleep as productivity tools, rather than just 'grinding' 24/7. It’s a quick read, very conversational, and packed with case studies that actually feel relevant. Even if you only take away two or three of these habits, the book will have paid for itself within a week.
Show moreFinally, a time management book that understands that productivity is about energy, not just minutes! Kevin Kruse does a fantastic job of breaking down the habits of the ultra-successful into small, bite-sized actions that anyone can take. I’ve started using a physical notebook to capture every thought that pops into my head, and it’s amazing how much mental space that clears up. The book is very easy to navigate, so you can jump straight to the chapters that interest you most. I personally think the '15 Secrets' framework works well, and the interviews with people like Richard Branson add a level of credibility that other books lack. Highly recommended for anyone feeling overwhelmed by their schedule.
Show moreThis book is a gem. What I loved most was the 'Personal Operating System' concept—it encourages you to stop reacting to everyone else's priorities and start living by your own. The writing style is very casual and direct, which I appreciate because I don't have time to read a 400-page manifesto on scheduling. It’s short, focused, and actually helpful. The advice to treat your calendar as your master list changed my life. No more endless, scrolling to-do lists that never get finished! It’s an empowering read that makes you feel like you can actually take control of your day. Definitely worth the investment for the practical strategies alone.
Show moreThis is a solid, actionable guide for anyone looking to reclaim their schedule. I found the 80/20 rule application particularly insightful, especially regarding how to filter out low-value tasks that eat up our energy. However, I have to be honest: the second half of the book felt a bit like a quote-dump. It seemed like the author just included every single interview response he received to pad out the page count. That said, the actual 'secrets' in the first half are gold. I felt that the tips on morning rituals and energy management were much more valuable than the typical 'work harder' advice you get in these types of books. It’s a very quick read, and you can easily skim the repetitive parts at the end while still getting the full value.
Show moreWhat I appreciated most about Kruse’s approach is that he doesn't just give you a list of tasks; he tries to change your mindset about time itself. The idea that time is our most precious resource is a cliché, but the way he frames it through the habits of people like Mark Cuban makes it hit differently. I’ve started implementing the 'Procrastination Cure' and focusing on my 'Most Important Task' (MIT) first thing in the morning. It’s not a perfect book—the formatting feels a bit like a collection of blog posts stitched together—but the content is highly digestible. It might not be for everyone, especially if you prefer deep, academic dives into psychology, but for a busy professional, it’s a great return on investment.
Show moreI really liked the structure of this one. Each 'secret' is presented clearly with examples of how real-world winners use them. I'm a big fan of the OHIO (Only Handle It Once) method for emails; it's something I've heard before but never really committed to until reading this. My only real gripe is that as a teacher, I can’t apply about 40% of this. I don't get to choose my meeting times or block out my afternoon for 'deep work.' However, the sections on morning rituals and capturing ideas in a notebook were still very applicable to my life. It’s a 4-star read for me because it’s motivational and easy to reference, even if the second half is mostly filler quotes.
Show moreI'd call this a 'productivity 101' book. If you’ve never read anything by Cal Newport or James Clear, you’re going to find some life-changing nuggets here. But if you’re already a fan of the genre, you might find it a bit repetitive. Most of these 'secrets'—like carrying a notebook or avoiding meetings—are things you’ve likely seen on LinkedIn or various blogs before. I personally struggled with some of the advice because I work in a rigid office environment where I can't just say 'no' to every meeting request. It’s definitely geared more toward entrepreneurs or high-level execs who have total control over their calendars. It’s a fine book for a quick refresher, but don't expect anything earth-shattering if you’re already an efficiency nerd.
Show moreIt's an okay book with some decent tips, but it definitely feels like it was written for a very specific type of person. If you're an entrepreneur or a CEO, you'll love it. If you're a mid-level manager or an employee with a boss who breathes down your neck, you might find some of the advice—like refusing to attend meetings—a bit unrealistic. I did enjoy the section on the Pareto Principle and how to identify the 20% of activities that provide 80% of the results. That’s a timeless concept that everyone should master. Overall, the tone is a bit too 'hustle culture' for me, but there is some genuine value here if you're willing to sift through the fluff.
Show moreI’m going to go against the grain here and say I was pretty disappointed. To me, this felt less like a book and more like an edited transcript of a series of emails. Kruse includes a massive amount of quotes from 'successful people,' but after a while, they all start to sound exactly the same. I felt like I was reading the same three pieces of advice over and over again for 200 pages. Is it readable? Sure. Is it well-researched? Maybe, but it’s mostly just anecdotal evidence. If you want a book that actually digs into the science of habit formation, go read Atomic Habits instead. This one is a bit too superficial for my taste, and I honestly think you could get the same information from a five-minute summary online.
Show moreQuestions about this book
What is the main idea of 15 Secrets Successful People Know About Time Management?
Kevin Kruse argues that successful people treat time as their most valuable asset. A day holds 1,440 minutes, so they choose one most important task, schedule it on a calendar instead of a to-do list, and protect it from email, meetings and unnecessary requests. He argues that productivity comes down to focus and energy rather than time, which is why he stresses a morning routine and timed work sessions.
What is the 321-Zero email system?
It is Kruse’s rule for keeping email from controlling your day. You check your inbox only three times a day and try to bring it down to zero within 21 minutes each time. He pairs it with unsubscribing from newsletters. His reasoning is that constant checking works like a slot machine: the unpredictable chance of a new message pulls you back and breaks your focus.
Why does Kevin Kruse say to stop using a to-do list?
Kruse cites research finding that, on average, 41 percent of to-do list items are never completed, partly because lists do not show how long tasks take. Unfinished items also create stress. Researchers at Florida State University found that making a plan for a task reduces that stress. So he recommends time blocking: putting important tasks straight onto a calendar and rescheduling them when something gets in the way, as gymnast Shannon Miller did.
How can I apply the book's ideas this week?
Start by writing down one most important task each day and giving it a time slot. Limit email to three checks a day. Offer short standing meetings instead of long ones, and turn down more requests. Run your tasks through three questions: how much this matters, who else could do it, and how you would finish it in half the time. Then protect your first hour for exercise, reading or reflection.
Who should read this book?
It suits professionals, managers, entrepreneurs and students who feel busy all day yet struggle to finish what matters. Each habit is short and tied to a real example, from Jack Dorsey’s themed workdays to Marissa Mayer’s meetings booked in five- or ten-minute blocks, so readers who want quick, practical rules more than theory will find plenty to try right away.
Readers also enjoyed
AUDIO SUMMARY AVAILABLE
Listen to 15 Secrets Successful People Know About Time Management in 15 minutes
Get the key ideas from 15 Secrets Successful People Know About Time Management by Kevin Kruse, plus 5,000+ more nonfiction titles.
- 5,000+ titles
- Listen as much as you want
- 7-day free trial
- Cancel anytime























