Leadership should not be a solitary act. Leaders need to surround themselves with people who will challenge their ideas, point out their shortcomings, and tell it like it is. To be an effective manager, you need to ensure that honest opinions and information reach you. Get your people to bother you by bothering them. Open-door policies are well intentioned, but you need to go further. Develop a culture of trust and openness. Show your people that you reward candor and that the more they bother you, the better.