15 Secrets Successful People Know About Time Management

Kevin Kruse draws on original survey research and interviews with billionaires, Olympic athletes, straight-A students, and over 200 entrepreneurs to present 15 principles of extreme productivity. His central argument is that highly successful people do not rely on traditional time management tools like prioritized to-do lists. Instead, they focus on values, priorities, and consistent habits.

Kruse opens with a personal story from 20 years earlier, when he was so overworked and sleep-deprived that he unknowingly sped past a state trooper on a New Jersey highway. During that period, he left home at 5 a.m. and worked until midnight, subsisted on coffee and fast food, and neglected his marriage, which ended in divorce. Despite maintaining a to-do list of up to 70 items, he was overwhelmed. He contrasts that former life with his current one: As a single father of three, he exercises regularly, runs a consulting practice, writes two books a year, and takes frequent vacations, all while rarely feeling stressed. His transformation began when he discovered that none of his successful friends used conventional time management methods. He then conducted original survey research of thousands of working professionals and found no correlation between time management training and higher productivity.

The first secret establishes the book's foundational mindset. Kruse recounts how, as the president of a fast-growing company, he printed the number 1440, the total minutes in a day, and taped it to his office door. The sign reminded colleagues of time's scarcity, and people began shortening their requests and declining unnecessary meetings. He argues that time is the most valuable asset because, unlike money or relationships, it can never be recovered once spent.

The second and third secrets address what to work on and how to schedule it. Kruse introduces the Most Important Task (MIT): the single activity that provides the greatest leverage toward one's most important goal. Citing Duke University professor Dan Ariely, he argues that people should work on their MIT first each day, during the two hours after waking when cognitive functioning peaks. Rather than tracking tasks on a to-do list, Kruse advocates scheduling them on a calendar. He argues that to-do lists fail because they do not distinguish between quick and time-consuming tasks, they encourage working on urgent items over important ones, and they cause stress through the Zeigarnik effect, a psychological phenomenon in which unfinished tasks produce intrusive thoughts. He introduces the practice of "time blocking," in which recurring calendar appointments are set for important activities, and cites LinkedIn CEO Jeff Weiner, who time-blocks up to two hours of buffer time daily for thinking and processing.

The fourth secret addresses procrastination, which Kruse defines not as laziness but as a failure of motivation compounded by "present bias," the tendency to favor immediate comfort over future rewards. He presents six strategies: anticipating how your future self will sabotage your goals; visualizing the pain of inaction and the pleasure of completion; enlisting an accountability partner; establishing reward-and-punishment contracts; adopting the identity of the person you want to become; and settling for "good enough" to overcome perfectionism.

The fifth secret confronts the guilt many people feel about leaving work undone. Kruse cites former Intel president Andy Grove, who wrote that a manager's work is never done and that the day should end when you are tired, not when you are finished. He offers examples of ultra-busy people who maintain firm boundaries: Virgin Group founder Richard Branson balances over 400 companies with adventure and leisure, and Facebook COO Sheryl Sandberg leaves work at 5:30 p.m. daily for family dinner. He also draws on Jessica Turner, author of The Fringe Hours, whose survey of over 2,000 women found that the hardest part of being a woman is the pressure of "being everything to everyone."

The sixth and seventh secrets cover capturing information and controlling email. Kruse presents Branson's assertion that a notebook is his most important possession and cites a 2014 study by Princeton and UCLA psychologists Pam Mueller and Daniel Oppenheimer showing that students who take notes by hand score higher on conceptual recall than laptop users. For email, he introduces the "321-Zero" system: process email only three times a day, set a 21-minute timer, and aim for inbox zero using the "4 D's," meaning Do it, Delegate it, Defer it by adding it to the calendar, or Delete it.

The eighth and ninth secrets address meetings and the power of saying no. Kruse argues that most meetings are poorly run and shares tactics from prominent companies: Google limits meeting participants to ten, Apple co-founder Steve Jobs ejected people who lacked a reason to attend, and Facebook co-founder Dustin Moskovitz instituted "No Meeting Wednesdays" at Asana. He introduces business author Verne Harnish's concept of daily huddles, 15-minute stand-up meetings that replace longer weekly meetings. On saying no, Kruse introduces the metaphor of "distant elephants," commitments that look small from far away but grow large as they approach, and emphasizes investor Warren Buffett's principle that very successful people say no to almost everything.

The tenth and eleventh secrets focus on working smarter through the Pareto principle, the idea that roughly 20 percent of activities generate 80 percent of results, and through delegation. Kruse traces the 80/20 rule to Italian economist Vilfredo Pareto and applies it to business, studying, and personal maintenance. He then introduces the "3 Harvard Questions" from a Harvard Business Review experiment by professors Julian Birkinshaw and Jordan Cohen: Can this task be dropped? Can it be delegated? Can it be redesigned? Workers trained to apply these questions saved an average of eight hours per week. He lists modern outsourcing services and details his own use of remote freelancers, while noting exceptions for tasks you enjoy, tasks tied to core values, and tasks that cost more to outsource than you want to earn.

The twelfth and thirteenth secrets address batching work and handling tasks efficiently. Kruse presents Twitter co-founder Jack Dorsey's method of theming each day of the week, which enabled Dorsey to lead both Twitter and Square simultaneously. He introduces entrepreneur coach Dan Sullivan's three categories: Focus Days for revenue-producing work, Buffer Days for administrative catch-up, and Free Days for complete rest. The "touch it once" principle urges completing any task that takes less than five minutes on first contact.

The fourteenth and fifteenth secrets turn to morning routines and energy management. Kruse shares his "Sacred 60" routine, which includes gratitude, meditation, exercise, and beginning his MIT by 7 a.m. He identifies consistent themes across the routines of figures like actor and former governor Arnold Schwarzenegger and motivational speaker Tony Robbins: waking early, hydrating, exercising, and meditating or journaling. He then argues that the real secret to productivity is not time but energy, citing performance consultant Tony Schwartz's "pulse and pause" concept, which involves alternating focused work periods with short recovery breaks based on the body's natural 90-minute energy cycles. He also presents the Pomodoro Technique, 25-minute work sprints followed by five-minute breaks, and notes a Draugiem Group study finding that top performers worked an average of 52 minutes followed by 17-minute breaks.

Kruse synthesizes all 15 secrets into a framework called E-3C, standing for Energy, Capture, Calendar, and Concentrate. Energy comes first: maximize vitality through sleep, nutrition, exercise, and morning rituals. Capture means carrying a notebook to externalize thoughts and reduce cognitive load. Calendar means scheduling priorities rather than listing them, theming days, and protecting time by saying no. Concentrate means working proactively, avoiding multitasking, and tackling the MIT during peak energy. The book closes with supplementary chapters compiling advice from seven billionaires, 13 Olympic athletes, 29 straight-A students, and 239 entrepreneurs, along with a Time Management Style Assessment quiz and 110 time management quotes.