Conversely, if you’re a boss, these are the people to nurture—not the ones who are clamoring for promotions and complaining about not being utilized enough but the ones who are proving themselves to be indispensable day in and day out.

Optimism sets a different machine in motion. Especially in difficult moments, the people you lead need to feel confident in your ability to focus on what matters, and not to operate from a place of defensiveness and self-preservation. This isn’t about saying things are good when they’re not, and it’s not about conveying some innate faith that “things will work out.” It’s about believing you and the people around you can steer toward the best outcome, and not communicating the feeling that all is lost if things don’t break your way. The tone you set as a leader has an enormous effect on the people around you. No one wants to follow a pessimist.

The decision to disrupt businesses that are fundamentally working but whose future is in question—intentionally taking on short-term losses in the hope of generating long-term growth—requires no small amount of courage. Routines and priorities get disrupted, jobs change, responsibility is reallocated. People can easily become unsettled as their traditional way of doing business begins to erode and a new model emerges. It’s a lot to manage, from a personnel perspective, and the need to be present for your people—which is a vital leadership quality under any circumstances—is heightened even more. It’s easy for leaders to send a signal that their schedules are too full, their time too valuable, to be dealing with individual problems and concerns. But being present for your people—and making sure they know that you’re available to them—is so important for the morale and effectiveness of a company.

I’m comforted by something I’ve come to believe more and more in recent years—that it’s not always good for one person to have too much power for too long. Even when a CEO is working productively and effectively, it’s important for a company to have change at the top. I don’t know if other CEOs agree with this, but I’ve noticed that you can accumulate so much power in a job that it becomes harder to keep a check on how you wield it. Little things can start to shift. Your confidence can easily tip over into overconfidence and become a liability. You can start to feel that you’ve heard every idea, and so you become impatient and dismissive of others’ opinions. It’s not intentional, it just comes with the territory. You have to make a conscious effort to listen, to pay attention to the multitude of opinions. I’ve raised the issue with the executives I work most closely with as a kind of safeguard. “If you notice me being too dismissive or impatient, you need to tell me.” They’ve had to on occasion, but I hope not too often.

As a leader, if you don’t do the work, the people around you are going to know, and you’ll lose their respect fast. You have to be attentive. You often have to sit through meetings that, if given the choice, you might choose not to sit through. You have to listen to other people’s problems and help find solutions. It’s all part of the job.