Instead of working on hard problems, it's best to prioritize on optimum problem and get the best out of your situation. With optimum problem, I mean the problems that allow you to maximize your living, instead of believing on moonshot dream.
It's okay to dream, but putting expectations on dream is losing touch with reality. Sure in an ideal world, essays like this would be perfect motivation, but you are living in a world ruled by billionaires and plutocrats. So, as long as you get enough share of the pie, I don't think one should pursue the moonshot dream.
Rather invest this time on working on job (whole-hardheartedly) only during office hours, and actually try living a life outside of it. You don't have to be a superstar to live a life because humans have already lived for so long.
Stop believing these bullshit VC ideas. The real essence of this essay is understanding the flow and noticing the events that triggers flow. [2]