In this HBR article they discuss how to be just assertive enough so that you are, on the one hand not too pushy, but on the other not too loose – thus not challenging your team. 

From my last years in leadership roles in AIESEC and other organizations I can clearly see that I have a tendancy toward being too overbearing and a quite challenging person to have as a leader. Qualities that make me great in certain teams can create stress when I am a team leader. 

The article, while an interesting commentary, doesn't offer a whole lot of habits or suggestions – so I'd ask you: what so you think are habits or practices that could help someone getting the balance much more right?