Cultural Offering provides an informative review of the "cream versus wax polish" shoe shining question.
I guessed wrong as to where the expert would land but am happy because his choice is my favorite.
When shining my shoes the other day, I applied some wax, then used the brush, and then - the best part - used a sheep fleece "block" to heighten the shine. I have owned that from when I was in the Army and it still does the trick.
Shoe shining, like lawn mowing, provides tangible proof of achievement. In doing so, it produces pleasure.
Feeling down? Go shine your shoes.