What Would Be A Good Health Field Occupation For Someone In My Situation?

Hi, right now I am driving a truck for a living. I am a man in his late 40s. I have a bachelor’s degree in liberal arts (no sciences courses in my background whatsoever) from 1991. I only make 32K a year.
I am single with no kids and think health care is a sure fire career move, probably even for someone older such as myself. What are some
good occupations in the health field for me? I want something that is
in demand, and something in which my age won’t be a detriment to finding gainful employment. I am thinking along the lines of a medical tech of some sort. I don’t need to get rich. I just want to get out of truck driving. Any ideas would be greatly appreciated, and followed up on.