Years ago, very early in my career, I rotated among a few teams at the company, and even then, one manager stood out as different from the others. I straight-up asked him if he had a philosophy or something, and this is what he said:

"Yeah, my job as a manager has three parts. First, get the right people for the job. Second, get them the resources they need. Third, get everything else out of their way."

Decades later, this still rings true. That team was the most productive I've ever seen.