Where's your platform?
That needs to be the goal when you seek out a job.
Bob Dylan earned the right to make records, and instead of using it to create ever more commercial versions of his old stuff, he used it as a platform to do art.
A brilliant programmer finds a job in a small company and instead of seeing it as a grind, churning out what's asked, he uses it as a platform to hone his skills and to ship code that changes everything.
A waiter uses his job serving patrons as a platform for engagement, for building a reputation and for learning how to delight.
A blogger starts measuring pageviews and ends up racing to the bottom with nothing but scintillating gossip and pandering. Or, perhaps, she decides to use the blog as a platform to take herself and her readers somewhere they will be glad to go...
There's no rigid line between a job and art. Instead, there's an opportunity. Both you and your boss get to decide if your job is a platform or just a set of tasks.