“Think of all the times in your life when you learned something, when you discovered something new. When this happened, were you speaking or listening?”
When speaking, you are providing information and when listening, you are receiving information. It may be nothing new, but then again, it may be new, important or even life changing. Take the time to listen and maybe, the next time you really do need to speak, the information you provide will be new to the listener. It may actually be important to them, or even life changing.