A yoga class is a conversation where both parties are communicating. While the teacher uses words, the students speak with their bodies. Far too often teachers respond to what they expect to see, or just press on with their agenda without noticing if their message has been received at all.
Look at your students! Practice figuring out what they are saying to you with their bodies, faces and breath, and then respond.
This same work can be reapplied to any conversation. Look at the people you are speaking to. Are they interested? Are they getting it? Respond to what you observe. Engage. Being present is so much more fulfilling.