Try Hard, but Not That Hard. 85% Is the Magic Number for Productivity.

Are you giving it your all? Maybe that’s too much.

So many of us were raised in the gospel of hard work and max effort, taught that what we put in was what we got out. Now, some coaches and corporate leaders have a new message. To be at your best, dial it back a bit.

Trying to run at top speed will actually lead to slower running times, they say, citing fitness research. Lifting heavy weights until you absolutely can’t anymore won’t spark more muscle gain than stopping a little sooner, one exercise physiologist assured me.

The trick—be it in exercise, or anything—is to try for 85%. Aiming for perfection often makes us feel awful, burns us out and backfires. Instead, count the fact that you hit eight out of 10 of your targets this quarter as a win. We don’t need to see our work, health or hobbies as binary objectives, perfected or a total failure.

“I already messed it up,” Sherri Phillips would lament after missing one of her daily personal goals.

Last year, the chief operating officer of a Manhattan photography business began tracking metrics like her sleep quality and cardio time on an elaborate spreadsheet. It was only after she switched to aiming for 85% success over the course of a week that she stuck with her efforts, instead of giving up when she missed a mark.

“It’s a spectrum of success,” she says.

The benefits of doing less

Once upon a time, bosses who preached total optimisation might actually achieve it, says Greg McKeown, a business author and podcaster who’s written about why 85% is a sweet spot.

More recently, the available comparison points and choices in our lives have exploded. We read about someone else’s dream job on LinkedIn, watch a mom prepare a perfect lunch for her kid on TikTok, then click over to scroll through thousands of products on Amazon. Constant comparison often means no end result ever feels good enough. Even searching for, say, the best umbrella to buy can become a time-sucking quest.

“We will drain ourselves,” McKeown says. “It’s a bad strategy. It costs too much.”

Test out doing a little less. If you turn in that project without the extra slide deck, “Does anybody care?” McKeown asks. If you make a decision with only 85% of the information in hand, what’s the result? Notice the time you get back for other things.

“There’s a lot of inconsequential stuff that goes into going 100%,” says Steve Magness, an exercise physiologist who coaches executives and athletes on performance. When we care too much, even minutiae starts to seem “like an existential crisis,” he adds.

Sometimes, the harder we try, the worse we get, injuring ourselves or choking under pressure, Magness says. Quit while you’re ahead, and the sense that your whole self-worth isn’t wrapped up in this one moment can actually make you more likely to nail it.

Relaxed confidence

The effortless success so many of us crave often comes from a relaxed confidence and a tolerance for ambiguity.

When economist Krishnamurthy V. Subramanian gave one of his first major addresses to the media as chief economic adviser for the Indian government, he prepared but tried not to overthink it.

“It’s that Goldilocks balance,” says Subramanian, now an executive director at the International Monetary Fund based in Washington, D.C. “85% is not slacking.”

When two of his slides wouldn’t cue up at the last minute, he pushed away his nerves and reminded himself the speech would be OK even if it wasn’t perfect.

“I’ll wing it,” he told himself calmly. The presentation went just fine.

Just tough enough

Dialling in on the sweet spot of 85% can help us grow. In a 2019 paper, researchers used machine learning to try to find the ideal difficulty level to learn new things. The neural network they created, meant to mimic the human brain, learned best when it was faced with queries set to 85% difficulty, meaning it got questions right 85% of the time.

If a task is too hard, humans get demotivated, says Bob Wilson, an author of the study and associate professor of psychology and cognitive science at the University of Arizona. “If you never make any errors, you’re 100% accurate, well, you can’t learn from the mistakes.”

Ron Shaich, a founder and former chief executive of restaurant chain Panera, is skeptical of people who hit 100% on bonus targets or sales projections. He wonders if the goals are too low. They should be ambitious enough that you won’t always get there, he says.

Presiding over Panera’s quarterly earnings reports, he’d aim to exceed guidance eight out of 10 times. The same went for big goals at the company.

Now an investor, board member and author of a coming business book that stresses 80% equals success, Shaich is convinced most companies don’t even hit that number.

“They all talk about what they’re going to get done. Then they don’t do it,” he says. Reach 80% and, “you’re doing great.”

Know when to stop

Years ago, as a consultant at Bain, Grace Ueng learned the “80-20 rule.” The idea was to stop once you were 80% complete on a project, she says. That first burst of work often contained the real meat of the project.

Now a leadership coach and strategy consultant, Ueng recently took up piano. She practiced for hours and grimaced when she performed for her music group. Then she started doing more targeted exercises, like tackling small chunks of a piece instead of running through the whole thing again and again.

Before a recent performance, she read a book and went to church instead of putting in extra hours at the piano.

When it was time to perform, she played well—and actually enjoyed it.

“You have to have the wisdom,” she says, “to know when to stop.”

As a competitive rower in my long-ago prime I sometimes used a racing strategy called fly and die. Sprinting to an early lead often yielded a fast overall time, even if I couldn’t hold my torrid pace through the finish line.

Some professionals take a similar approach to their desk jobs, starting their workdays with a 5 a.m. to 9 a.m. shift. They are up before the sun—and, more important, before their co-workers—to get a jump on the workday and impress the boss.

Nothing screams go-getter like a predawn email! Getting stuff done early allows them to clock out midafternoon and still look like stars, even if their routines require Ben Franklin-esque sleep schedules and vats of caffeine.

Melissa O’Blenis rises by 4:30 a.m. for prayer and Peloton time before starting her job at the digital consulting firm Argano.

“I just love checking things off my list,” she says. “I need that focus time away from Teams messages, email notifications and text alerts.”

A mother with two sets of twins, O’Blenis, 48, often breaks for her kids’ afternoon sports without feeling guilty or judged. Colleagues jokingly call her Granny because her 9 p.m. bedtime makes the early starts possible. But Granny got the last laugh when she was promoted to a director-level role in March.

More than 90% of knowledge workers want to flex their hours, according to surveys by Slack’s Future Forum . In the pandemic many of us got in the habit of handling personal commitments during standard business hours, then catching up on work tasks later .

Now that the office battle is largely over, fighting a return to rigid, 9 a.m. to 5 p.m. schedules might be workers’ last stand. But managers complain about afternoon dead zones when employees are out of pocket.

The solution for more workers is starting sooner instead of finishing later. Workflow software maker Asana reports that 21.4% of users are logging on between 5 a.m. and 9 a.m. this year, up from 19.8% in 2021. About 12% of work tasks are completed before 9 a.m., the company says, compared with 10% before the pandemic.

Early-bird bosses

Gibran Washington and his basketball teammates at Hofstra University used to run at 6 a.m. He maintained his early wakeups while climbing the ranks in food-and-beverage management.

By 9 a.m. meetings, he had already exercised, meditated and put in a couple of hours of work.

“I always found myself more prepared than my colleagues who hadn’t had their first cup of coffee yet,” says Washington, 40, who doesn’t drink coffee. Now he is chief executive of Ethos Cannabis, a chain of 12 dispensaries in three states, and rises as early as ever.

Waking and working ahead of the pack is a common CEO habit, from Apple ’s Tim Cook to General Motors ’ Mary Barra . Even if your ambitions are less grand than the corner office, starting early could help you stand out for one simple reason: The boss is probably up, too, and taking notice.

Matt Kiger says being the first one into the office helped him catch his manager’s eye and advance after changing careers from education to media sales. He would set his alarm for 5 a.m., hop a train from Connecticut to New York and be at his workstation before 7.

“I thought, ‘What is it going to take to break through?’” he recalls. “‘It’s going to take being there when my boss comes in, already at my desk making phone calls.’”

Now a senior vice president for digital sales at Townsquare Media , Kiger, 47, says much of the daily communication among company leaders happens by text and phone from 6 a.m. to 8 a.m. It’s possible to succeed as a night owl, he says, but people who sleep in risk missing a window when many executives are awake and accessible. While some working parents can’t swing early-morning meetings, others like Kiger say they are the key to being present at kids’ after-school activities.

Getting the worm

Matt Sunshine—whose surname surely predestined him to be a morning person—wakes at 5:30 a.m. to read the news. Then he cycles or takes a Pilates class and is on his computer by 7.

Sunshine is CEO of the Center for Sales Strategy in Tampa, Fla., which helps healthcare, media and professional-services companies generate leads. He doesn’t expect his 55 employees to follow his schedule but says it becomes progressively harder to get his attention as the day goes on and his calendar fills up with meetings. He also tries to log off by 5:30 p.m. for family time, so working after hours won’t necessarily make an impression.

“If you want to get my attention, a good time to get me is first thing in the morning,” Sunshine, 55, says. “Because people know I’m an early riser, I think that does influence other people to do the same.”

Elvi Caperonis’s morning routine is next-level organised. Her alarm rings at 6 a.m. She goes for a run at 6:30. At 7 she showers and eats breakfast. At 7:30 she opens her laptop and sets a timer for 25 minutes. That’s her first block to focus on the most important task of the day before a five-minute break. She repeats the on-off work pattern throughout the day.

Caperonis, a technical program manager at Amazon , makes a daily to-do list with nine items. She rates one critical, three medium-level and five lower-priority. This helps her work efficiently and in the right order.

The 41-year-old works from home in Florida and often picks her daughter up from school at 2:30 p.m., freedoms she has preserved partly by being highly productive early in the day, she says. Much of her job involves identifying potential risks to a project’s success, and when she sends an early-morning alert it arrives really early for company leaders in the Pacific time zone.

“They appreciate having that information first thing when they open their email,” she says. “In my experience, leaders are also early birds.”