How does a highly introverted person get by? !?

you just have to learn how to live with being introverted. there are many jobs out there that cater more to introverted people. also you need to understand what you are comfortable with, remember that you don't have to do anything that you are not comfortable with. there are lots of people out there who are introverted, i am an introvert myself and we make up 25% of the population so you are not alone.