And, despite what most workers think, when you are the boss you are not free of control. You still have a boss yourself. Every boss answers to some other boss. Perhaps it is stockholders, or a board of directors, or a bank, or customers. The harshest boss of a boss is ultimate accountability.
Most workers strive to be a boss.
Soon afterward you are expected to make those other people do very good work. The theory is that if you do a good job at one level, worker for instance, that the next level, supervisor or manager, is a logical progression. But it is not logical. This new job of boss needs a very different core competency than the one for good work. This new job has a different set of responsibilities, and a different set of loyalties.