Gradually things may become such commonplace parts of the environment they go unnoticed. The ticking of an antique clock. Scenery along routes traveled every day. Music in a car, in a restaurant.
Patterns become too familiar to the senses and impressions grow weak and dim. The radio is switched off and the brain continues to generate the illusion of sound out of habit and memory.
The deliberate exercise of subtlety in thought, apprehension, and expression contributes to an awareness unburdened by bland routine and awakened to unbounded possibilities.
It is not external sensation that elevates consciousness, but refinement of reason and will.