As someone who has always had very selective hearing this actually helped me to discover how to use that as an advantage. It has always been hard for me to pay attention to things or listen to things for a long period of time without forgetting that I’m listening and letting my mind wander and I seemed to have this problem with doing this exercise at first too. It was hard to not let my thoughts take over and to really just listen and appreciate the sounds. I noticed that I could do it easier if I did it for short periods of time rather than longer bouts. It surprised me how much you can hear when you block everything out and become one with the noises around you. I think that this really helped me become a better listener and opened an entire new way of looking at the world that I had never been exposed to before.