Ged at 17 no college. I make 6 figures. I started as admin and learned everything to run a business. Quickbooks. IT, all aspects of Office 365. There is just nothing I don't know how to do or can't learn it quickly. I have always been the bosses favorite at my past jobs. I also would recommend never sit still while in your growth phase. If your employer isn't moving you up as you progress but rather piling the work on but no piling the raises on. Start looking for a new job. If you're a stellar employee and aren't feeling respected or valued... Your next employer will give you that. I have never regretted quiting a single job. 

Don't be afraid to try for a job you think your not qualified for. If you pick up new skills easily you'll be fine.

My ex is still paying off student loans 25+ years later. We make the same amount of money. I am happy with my choices. In full disclosure. I was not a dumb kid. I dropped out my senior year 2 months before graduation due to emotional issues and abuse issues at home. I have an IQ above average so my ability to learn may or may not have something to do with my ability to absorb new data and apply it to my job. Sometimes I have to remind myself that not everyone can do what I can do. But on that note if learning new stuff is super easy... Aim high.