I Have the Chance to Go Back to School & Have No Idea What to Do

Hi! I'm a 27F with an English-related BA currently making sub-40K who has been given the chance to go back to school for a two-year degree/program in order to actually start a real career. The problem now is that I have no idea what to do. It HAS to be something capable of getting me realistic results, which means most of the options I'm looking at are in the medical field.

Becoming a Radiology Tech is easily my top pick, but those programs are ridiculously competitive. I'm also looking at programs for becoming a Dental Assistant, a Phlebotomist, a Medical Lab Tech, a Surgical Tech, or a CPA, but I'm seriously clueless what direction is right for me, and what's the most practical in the current landscape. All I know is I definitely could not handle being a nurse.

ANY input is appreciated!