[maxxxxx]

One thing I had to learn when I was manager was that things are not always harmonious. Sometimes an unpleasant situation needs to be addressed and it's the manager's job to do that. Allowing someone on the team to underperform or behave badly or bad guidance from upper management demoralizes the whole team so the manager has to rectify it quickly.

[TadaScientist]

I have to agree on this point. Shit will happen, it's how you handle it that matters.

Maybe a younger developer is brilliant but arrogant and dismissive of others.

Maybe a senior team member lays low not producing and piggybacking off of what others are doing

My biggest issue was feeling comfortable enough to directly ask people to work on specific projects / pieces of work.