Last week these guys were my partners, riding beside me and grabbing beers after shift. Now I've got sergeant stripes and I'm the one who has to write them up and tell them they messed up. They still look at me like a friend, and I can feel the friendship straining every time I have to be their boss instead.
More people experience this than they realize.
You just got promoted and now have to correct the same people who were your partners.
If this sounds familiar, the Library can help you find the bigger picture.