I feel like this is my life these days…
In Greek mythology Sisyphus was the king of Ephyra. He was punished for his self-aggrandizing craftiness and deceitfulness by being compelled to roll an immense boulder up a hill, only to watch it roll back down; repeating this action for eternity.
As a punishment for his trickery, King Sisyphus was made to endlessly roll a huge boulder up a steep hill. The maddening nature of the punishment was reserved for King Sisyphus due to his hubristic belief that his cleverness surpassed that of Zeus himself. Zeus accordingly displayed his own cleverness by enchanting the boulder into rolling away from King Sisyphus before he reached the top which ended up consigning Sisyphus to an eternity of useless efforts and unending frustration. Thus it came to pass that pointless or interminable activities are sometimes described as Sisyphean
You can read more about Sisyphus here: