You missed my point, indeed. There will always be specific aspects of any job that are less than pleasant, but if the entirety (or, at least, most) of your job is so discombobulating that you need a rigid system to be able to function, you might not be in the right line of work.
As a side note, I don't buy that "adulthood = being miserable" racket. You can do honest, income-generating work that's fulfilling and fun. In fact, you probably should be. None of this "coming to grips" nonsense. That's an excuse people tell themselves when they feel stuck in a miserable place.
I hate doing my taxes. I hate mopping my floors. I truly hate weeding. These things are the cost of life.
Adulthood means doing things because they have to get done, not because they are fun. They call it work or chores or taxes because it isn't play.
We all come to grips with that if we are to survive. No sense denying it.