Expectation management is a huge driver of quality of life.
Knowing how to carve out your niche and not be expected to delvier feature after feature without a break is part of "managing upwards", which is another important life skill to gain.
>>eterm+(OP)
"carving your niche" involves either through a lot of experience (power) or to be known in the industry (clout). The latter isn't all based on raw skill so you just hope you don't burn out before you get to such a point.