Industry is the virtue of working persistently with diligence.
It is also the way of nature and universe. Birds,trees,animals,insects need to be industrious for preserving and procreating thier life force.
In nature as well as human world its only the industrious who survives and strives to the top.
It is a sublte and profoud pleasure, should be seeked and pursued for its own sake and not for its end results.
i.e Work hard for the joy of hard work, for pain of breaking the shell of our own understanding and for the sweet contentment which a day of hard work brings.
Soak in your art.