Your writing.

Write to clear the fog from the window of your soul.
A single letter (pick a w); gives us nothing.
A single word (pick the word write) close to nothing.

Now recombine twenty six letters into one word. Then cobble
together a few tens of words. Do you have an essay? Maybe?
One idea, one focus cobbled together by one person opens
a window on the soul. The window may be clear, cloudy or
something other? Examine your tens of words. Does the idea,
the focus remove some of the fog on the window of your soul?
 
Soul. The immaterial essence of an individual life.
Merriam-Webster's Eleventh Collegiate