As a many years out of college person looking at medical school now, I'd suggest you consider going into management consulting or whichever other career is of interest for several reasons. One, It took me several jobs over a number of years to figure out what I did and did not like about different fields. "my boss is a jerk" is not a good reason to quit, some aspects of disagreeability are present in any job & industry, for example. The only way I could tell medicine was a good fit for me was, after working in a well-paid position for years and seeing what the future could bring, I found I really did not want that future but rather was driven by other things.
Two, I'm hearing that some schools want med students with some experience, at least a few years. I've heard that many times regarding my state school from people who've interviewed there. There may be arguments on either side, a few years in a professional job tend to allow a person to become more patient, realistic, professionally mature, hopefully altruistic, etc. There are consulting positions that consult to healthcare, which would be directly applicable; mckinsey has a healthcare practice group (or they did a few years ago)
Three, couldn't hurt to save a chunk of money to reduce the debt you need to go into for med school, 50K less of student loans at 6% from M1 through end of residency would save you quite a bit in monthly payments after finishing as a doctor.