
Now, having managed dozens of teams spanning tens to hundreds of people, Julie knows the most important lesson of all: great managers are made, not born. How was she supposed to spin teamwork into value? How could she be a good steward of her reports' careers? What was the secret to leading with confidence in new and unexpected situations?

She stared at a long list of logistics-from hiring to firing, from meeting to messaging, from planning to pitching-and faced a thousand questions and uncertainties. That's exactly how Julie Zhuo felt when she became a rookie manager at the age of 25. Congratulations, you're a manager! After you pop the champagne, accept the shiny new title, and step into this thrilling next chapter of your career, the truth descends like a fog: you don't really know what you're doing.
