Muscles not used will atrophy. The same applies to the Beauty Mind.
Take a hike! Look around. Take note of what draws your eye.
The first step to reviving the muscles of the Beauty Mind is to pay attention to the spaces and details that delight you. What feels good? Which ones make you smile? Compare one with another. Which seems to be more alive? Which is brighter? Which is flat? Which is duller?
As with music appreciation, start with paying attention to what feels good.
