And how does the work become "meaningful and deeply rewarding"? For some, it may come just from repetition. Others manage to abstract their occupation away and source the meaning and rewards from families and lifestyle their work supports. But there are people for whom this doesn't work, and this is where I believe the "passion" mindset comes from. A lot of jobs are not only not meaningful, they're net harmful to society. And most people don't get to choose what they're working on anyway, economic considerations make the choice for them. So there's a tension.