We live in a very noisey world:
Traffic, people, computers humming, washing machines, dishwashers, vaccuums, music, televisions, phones, doorbells, alarms, alarm clocks, answering machines, hard soled shoes on hard floors...
When is the last time you sat in silence? Have you ever, at the end of a busy day, stopped for 5 minutes to lie in silence on your living room floor, your couch, your bed?
Five minutes of silence.
Try it.