It's seems so obvious - you have to listen to be effective. In this article, the author points out a couple of solid reasons for listening.

First, you need to pay attention to the opinions of your team to be able to deal with what's going on in the world and to be able to elicit their opinions (not just what they think you want to hear).

Second, it's easy to get trapped in a bubble as a leader. Effective listening allows you to see through the games, the stories, and the hidden agendas.