Running a team is hard because it ultimately boils down to people, and all of us are multifaceted and complex beings. Just like how there is no one way to go about being a person, there is no one way to go about managing a group of people.

And yet, working together in teams is how the world moves forward. We can create things far grander and more ambitious than anything we could have done alone. This is how battles are won, how innovation moves forward, how organizations succeed. This is how any remarkable achievement happens.

I believe this as deeply as I believe anything: Great managers are made, not born. It doesn’t matter who you are. If you care enough to be reading this, then you care enough to be a great manager.

This is the crux of management: It is the belief that a team of people can achieve more than a single person going it alone. It is the realization that you don’t have to do everything yourself, be the best at everything yourself, or even know how to do everything yourself.

Your job, as a manager, is to get better outcomes from a group of people working together. It’s from this simple definition that everything else flows.

You can be the smartest, most well-liked, most hardworking manager in the world, but if your team has a long-standing reputation for mediocre outcomes, then unfortunately you can’t objectively be considered a “great” manager.

The best managers I know all agree on one thing: growing great teams means that you are constantly looking for ways to replace yourself in the job you are currently doing.

No matter if you are the CEO or a front-line manager, building a great team is one of the most important things you can do.