Balance. Truly. Sometimes there is too much strain. There's too much focusing on one thing. For example: One might have the idea that one should listen, so they listen to the fan. However, are they really hearing it or are they just hearing a glossed over version.
In balance it seems that sounds come alive. There are sounds happening that you didn't notice before, but they just pop out. So why couldn't you hear them before? Balance. Not really focusing on any particular sound but just open hearing. Letting hearing hear. Perhaps there might be an intellectualizing of a new sound that is heard like "What is that?" "Sounds like a..." etc. But if it is just left alone it actually opens up and becomes clear.
The same goes perhaps for touch, sight, smell, taste, and thinking. Isn't it funny. Thinking about thinking. Thinking about the foot contacting the floor in kinhin, instead of actually opening up to the feeling.
It also seems when there is an opening, ie. of sound, other parts of our experience open as well, for example touch, breath, taste, maybe seeing.
Anyway, In this center of balance is where it's at. Where the world comes alive.