Good leaders and teachers learn a lot about what to do, by learning a lot about what not to do. Bad teachers and challenging leaders teach observers a great deal about how they need to go forward in teaching and leadership.
Personal and professional separation are necessary, particularly if you are a school leader. It is very hard to be a boss to one’s mates.
Remember to be on appreciator of things that people with whom you associate too well. In education we are quick to criticise but often slow to commend.
If you pick up a good idea on process from somebody else, be quick to thank them and to recognise them for their development of you in your role.
Make sure the expectations of others are practices your own personal and professional life.