Good luck with that.
Fact is automation has pretty much eliminated "lower level" positions such as "billing clerk", "bookkeeper", audit technician...
Fact is even "over qualified" people are having a rough time finding jobs as more firms rely on third parties and software packages to handle roles that used to go those without degrees.
Here is a mostly accurate but still humorous perspective by an introvert that DOES need to interact with people for his job --
Caring for Your Introvert - Jonathan Rauch - The Atlantic
It is entirely possible to have a successful career and still make room for some "quiet time". This is different from people that have extreme anxiety toward interacting with others or other asocial behaviors that could include types of personality disorders that may be treated --
Personality disorder - Treatment
Anxiety disorder - Phobias