There's always this vague assertion that people should go "do something valuable", or that people should contribute to the evolution of society/technology in some way by getting the right job or being some brilliant entrepreneur, but both of these charges assume so much and are so undefinable that they're really almost meaningless to issue. I mean, what are the truly "valuable" things? Growing crops? Building homes? Obviously, even if we wanted to, we can't all do those things - it only takes so many people to fulfill those needs. What then are the great future contributions to society/technology? Even if those things could be narrowly defined, I'm guessing that really only less than 1% of people could meaningfully contribute towards them anyways - unless I'm missing something and everyone is secretly just one step away from being a brilliant scientist.

So the rest of us fill the time working for whatever people are willing to pay for. If the most efficient way to do that is working in factory building car parts, or creating digital illustrations for a book, or selling smartphone contracts, or making youtube videos, or holding onto an asset that later someone else will want for more money - who can say which one of these things ranks the best  as far as "meaning" goes, since, beyond the truly basic (food and shelter) and beyond the truly transformative, what, at the end of the day, really is meaningful?