• Home
  • Latest
  • Fortune 500
  • Finance
  • Tech
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia

Trendingnow

1

After forcing workers back to the office, Goldman Sachs and JPMorgan Chase are now letting their staff work remotely—but only for the World Cup

2

Markets tumble worldwide as Fed resets expectations: $400 billion wiped off SpaceX stock

3

Current price of oil as of June 23, 2026

1

After forcing workers back to the office, Goldman Sachs and JPMorgan Chase are now letting their staff work remotely—but only for the World Cup

2

Markets tumble worldwide as Fed resets expectations: $400 billion wiped off SpaceX stock

3

Current price of oil as of June 23, 2026
LeadershipNext to Lead

T-Mobile’s CEO shares the management shift that vaulted the company from a $6B to $195B telecom giant

Emma Burleigh
By
Emma Burleigh
Emma Burleigh
Reporter, Success
Down Arrow Button Icon
Emma Burleigh
By
Emma Burleigh
Emma Burleigh
Reporter, Success
Down Arrow Button Icon
June 21, 2024, 11:30 AM ET
Mike Sievert, CEO of T-Mobile.
Mike Sievert, CEO of T-Mobile, shared the leadership qualities that are essential in business.Getty Images
Add Fortune on Google for similar content.

Successful leaders embody three traits: They’re innovative thinkers, they lean into their strengths, and they’re masterful storytellers. That’s according to T-Mobile CEO Mike Sievert, who took to the stage at The Wharton School of the University of Pennsylvania’s May commencement to share leadership and career lessons gathered over his 12 years at the telecom giant.

Starting with what makes for an effective manager, Sievert said the term itself is a misnomer. “The fallacy of management is the name. Managers aren’t here to manage things—at our best, we are here to change things.” Strong supervisors are change agents, able to challenge the status quo and switch strategies when things aren’t panning out. They also have an inventive, growth mindset, are willing to push boundaries, and can influence their teams to do the same. “Good leaders are here to bend the curve, not just manage it,” Sievert said.

Notably, he attributes this state of mind to helping catapult T-Mobile from a $6 billion market cap company to a $195 billion telecommunication juggernaut. His success as a leader, said Sievert, boiled down to consistently looking for new growth avenues, taking a chance on experimental ideas, and brainstorming ways to improve customer experiences. It also required taking smart, calculated risks with the business—and on himself. “It’s a simple formula: Take a chance on yourself, and find someone who will take a chance on you,” he said.

Sievert also told students to lean into what comes to them naturally, focusing on what they’re good at rather than on correcting their weaknesses. “Following your competence” in areas that feel innate makes it easier to expand on relevant skills and augment one’s expertise, leading to stronger contributions to the business. Still, Sievert added, leaders should be open to coaching and mentorship to develop their new and existing abilities. Passion for the job will hopefully follow suitwhen using this strategy, he said.

Along those same lines, good leaders avoid getting bogged down by failures. They center their efforts on the “green”—what drives high return on investment—rather than the red, or what’s not working. 

“Most companies are fixated on the red, obsessing over what’s going wrong. I think that’s a big mistake,” Sievert said. “I’m much more focused on the green, what’s working, and how to replicate and grow that success. It’s far more productive and rewarding to stoke successes than to constantly fight fires.” That means feeding into teams’ strengths and wins, investing more in high-reward projects, and expediting smart ventures. In doing so, Sievert said, “Others across the organization start feeling motivated to replicate elements of the winning project’s success formula—and more wins tend to follow.”

Finally, Sievert said that leaders should be strong storytellers. Compelling narratives are the most powerful tool to motivate and build relationships with both employees and consumers while also pushing a business agenda. Whether you’re a recruiter interviewing job candidates, a manager looking to motivate staffers, or a leader guiding a team to create new products, Sievert said, storytelling matters. “Good finance people can maintain great spreadsheets, but the best one can tell the story that those numbers portray.”

The power of a gripping tale shouldn’t be underestimated, he emphasized, pointing to startups that attract investors because of their alluring stories. Within the workplace, storytelling also comes into play when narrating one’s career to hiring managers or making a plea to the CEO or board. Being able to translate and emphasize the “why,” Sievert said, is the most essential skill in business and life.

“You have the power to connect with people’s emotions, inspire actions, disarm people with a laugh, and humanize complex things and make them relatable.”

About the Author
Emma Burleigh
By Emma BurleighReporter, Success

Emma Burleigh is a reporter at Fortune, covering success, careers, entrepreneurship, and personal finance. Before joining the Success desk, she co-authored Fortune’s CHRO Daily newsletter, extensively covering the workplace and the future of jobs. Emma has also written for publications including the Observer and The China Project, publishing long-form stories on culture, entertainment, and geopolitics. She has a joint-master’s degree from New York University in Global Journalism and East Asian Studies.

See full bioRight Arrow Button Icon
Add Fortune on Google for similar content.

Latest in Leadership

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025

Most Popular

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Fortune Secondary Logo
Rankings
  • 100 Best Companies
  • Fortune 500
  • Global 500
  • Fortune 500 Europe
  • Most Powerful Women
  • World's Most Admired Companies
  • See All Rankings
  • Lists Calendar
Sections
  • Finance
  • Fortune Crypto
  • Features
  • Leadership
  • Health
  • Commentary
  • Success
  • Retail
  • Mpw
  • Tech
  • Lifestyle
  • CEO Initiative
  • Asia
  • Politics
  • Conferences
  • Europe
  • Newsletters
  • Personal Finance
  • Environment
  • Magazine
  • Education
Customer Support
  • Frequently Asked Questions
  • Customer Service Portal
  • Privacy Policy
  • Terms Of Use
  • Single Issues For Purchase
  • International Print
Commercial Services
  • Advertising
  • Fortune Brand Studio
  • Fortune Analytics
  • Fortune Conferences
  • Business Development
  • Group Subscriptions
About Us
  • About Us
  • Press Center
  • Work At Fortune
  • Terms And Conditions
  • Site Map
  • About Us
  • Press Center
  • Work At Fortune
  • Terms And Conditions
  • Site Map
  • Facebook icon
  • Twitter icon
  • LinkedIn icon
  • Instagram icon
  • Pinterest icon

Latest in Leadership

Now she’s worth $200 million. But Sarah Jessica Parker says being ‘one of eight kids that struggled financially’ growing up created her work ethic
SuccessCareer Advice
Now she’s worth $200 million. But Sarah Jessica Parker says being ‘one of eight kids that struggled financially’ growing up created her work ethic
By Orianna Rosa RoyleJune 24, 2026
14 minutes ago
Tesla cofounder JB Straubel’s first pitch to Elon Musk failed. Then he turned his ‘hobby’ into a $1.3 trillion success
SuccessBrainstorm Tech
Tesla cofounder JB Straubel’s first pitch to Elon Musk failed. Then he turned his ‘hobby’ into a $1.3 trillion success
By Rachel VentrescaJune 24, 2026
15 minutes ago
The hidden cost of your AI rollout: burning out the high performers running it
Workplace Cultureburnout
The hidden cost of your AI rollout: burning out the high performers running it
By Mikaela Cohen and HR BrewJune 23, 2026
10 hours ago
dr
HealthCancer
The U.S. cut cancer deaths by 34% since 1991—but not in 458 rural counties
By Arthur Cosby and The ConversationJune 23, 2026
13 hours ago
college
SuccessEducation
47% of Harvard seniors admit to cheating — and the problem existed long before ChatGPT
By Austin Sarat and The ConversationJune 23, 2026
13 hours ago
work
Workplace Culturework culture
Worker engagement just hit a decade low — and new data from 88 million employees shows why managers are the problem
By Bob Batchelor and The ConversationJune 23, 2026
13 hours ago

Most Popular

After forcing workers back to the office, Goldman Sachs and JPMorgan Chase are now letting their staff work remotely—but only for the World Cup
Success
After forcing workers back to the office, Goldman Sachs and JPMorgan Chase are now letting their staff work remotely—but only for the World Cup
By Orianna Rosa RoyleJune 23, 2026
19 hours ago
Markets tumble worldwide as Fed resets expectations: $400 billion wiped off SpaceX stock
Banking
Markets tumble worldwide as Fed resets expectations: $400 billion wiped off SpaceX stock
By Jim EdwardsJune 23, 2026
21 hours ago
Current price of oil as of June 23, 2026
Personal Finance
Current price of oil as of June 23, 2026
By Joseph HostetlerJune 23, 2026
18 hours ago
Meet the 2 men putting New York's $300 billion pension fund in play for the first time in 20 years
Investing
Meet the 2 men putting New York's $300 billion pension fund in play for the first time in 20 years
By Nick LichtenbergJune 22, 2026
2 days ago
Former U.S. Secret Service agent says bringing your authentic self to work stifles teamwork: 'You don’t get high performers, you get sloppiness'
Success
Former U.S. Secret Service agent says bringing your authentic self to work stifles teamwork: 'You don’t get high performers, you get sloppiness'
By Sydney LakeJune 21, 2026
3 days ago
Texas and Charlotte used to build huge McMansions—now they're copying the California design tricks they once mocked
Real Estate
Texas and Charlotte used to build huge McMansions—now they're copying the California design tricks they once mocked
By Sydney LakeJune 22, 2026
2 days ago

© 2026 Fortune Media IP Limited. All Rights Reserved. Use of this site constitutes acceptance of our Terms of Use and Privacy Policy | CA Notice at Collection and Privacy Notice | Do Not Sell/Share My Personal Information
FORTUNE is a trademark of Fortune Media IP Limited, registered in the U.S. and other countries. FORTUNE may receive compensation for some links to products and services on this website. Offers may be subject to change without notice.