A lot of these seem to fall into the "Management Philosophy" category - applicable if you're a manager or if you are attempting to manage your own career as opposed to solving day-to-day task issues.
A bad manager is a "funnel" and you know exactly what they do.
Likewise, I'll share some of the problems I'm working on with my reports. You don't hand these problems down though, you just talk about it and solicit feedback & ideas.