Quotes about managers principles

Leaders must either invest a reasonable amount of time attending to fears and feelings, or squander an unreasonable amount of time trying to manage ineffective and unproductive behavior - Brene Brown
The core message is simple: proactively listening to your team's emotional state isn't a soft skill, it's a hard-nosed efficiency strategy. You pay now, or you pay a lot more later.

Wise advice on managers

Never automate something that can be eliminated, and never delegate something that can be automated - Timothy Ferriss
At its core, this is a hierarchy of action for productivity. It's a simple, two-step filter for any task: first, see if you can just get rid of it entirely. If not, then you figure out how to make it run without you.