Trying to be a good boss and stay friends is a tough balancing act.
I came up that same road years ago and experienced the trials and tribulations of trying to be a good boss and stay friends with the people I worked with, as well as those who worked for me. I asked a lot of questions, but usually got conflicting answers along with a multitude of opinions. Through trial and error, coupled with evening management courses (even though they were not directly related to our construction industry), I accumulated some effective do's and don'ts that I used to train hundreds of supervisors in our own company.