Isn't that the point, though? You could spend those 50+ hours struggling to do something to pull yourself out of mediocrity yet still end up frustrated, defeated, and unhappy. For some people -- perhaps even most -- watching Game of Thrones again might just make them happier. I see nothing wrong with that. It's the relentless drive to achieve fame, wealth, importance, that can lead many to depression, constant self-criticism, and unhappiness. Choosing to spend that time on something enjoyable, even if to you it seems unworthy of your time, is a fine way to enjoy the fruits of one's labor.