Your job isn't as important as you think it is. Your work, however, is an entirely different matter.
My mother worked 9-5 in an office. My father worked nights as a trucker. My mother and her coworkers wore dresses and suits and fancy shoes, my father and his coworkers wore uniforms. My mother's work ethic helped her to become a manager in her office in a time when women were thought to be at most, a good assistant. My father's work ethic got him a brand new truck and a place as a Union representative over employees who had worked that same job for 2 or 3 times as long.
Clean cut and pressed, or casual and slightly dirty from a long day at work, what mattered wth their carrears was their approach. Their "jobs" were very different, their "work" was the same. They took pride in doing their job well, in being conscientious and hard working. In not taking shortcuts or disregarding those who would be affected by the work they did. Their jobs were important to them. They paid the bills and put food on the table and helped in the raising of three children. Their work gave them pride, gave them purpose, gave them integrity. And taught those three children something vital and true.
You are not defined by a job description. You are not defined by the title on your business card. And you are most certainly not defined by your location on the management chart. No. You are defined by the effort and pride that you put into your work. A job is why the floor gets scrubbed. Work is why it is clean enough to eat off of. Do not confuse your job with your work. It is much too important.