Okay, once upon a time I was in a similar situation, so here's an exact step-by-step guide to what I did.
I got into FIRE in 2011 a few weeks before I turned 25, and I was working in a shitty warehouse job for somewhere around 12/hour, just like you, except without the savings! My boyfriend was working in a grocery store for minimum wage. I had no credentials, and he had a degree in something fluffy that doesn't involve a definite career path.
So we decided we wanted to FIRE, and made a plan. We figured out that with our skillsets, interests, and abilities, the best jobs we could get would probably be some sort of office admin work. So we both started applying to those jobs like crazy. In the meantime, I signed up with Mint, and started detailed financial tracking. We also tightened up our spending and focused on improving our self-reliance skills. I learned basic sewing, and greatly expanded my cooking repertoire (combined with cutting grocery delivery service, this cut our food spending in half). He took a few classes to polish his Microsoft Office skills, and also learned some basic bookkeeping.
I was the first one to land an office job - a part-time medical leave contract for only a few months, but at a pretty prestigious company that I figured I could use as a springboard to something else. My experience and excellent reference from that job landed me a much better full-time office job at a large law firm, with great benefits and much more money. I worked there as an office clerk for about five years, doing things like making coffee and tidying up communal spaces, plus some reception coverage and helping with events. At the same time, my boyfriend got a job as a typist at a small company, and gradually transitioned to administrative assistant work. Our lifestyle never changed from when we got paid peanuts, so our savings rate just skyrocketed over time. We just kept throwing everything into index funds and ignoring it.
As mentioned, that continued for about five years, until we jumped ship to both work at the same company for more money and better work environments. He worked there as an administrative assistant for close to three years, and I've been a receptionist for almost two at this point. He decided to quit to start a freelancing business last summer, and has been having a great time with that.
At this point we bring in about 80-85K combined, which is enough for us to live an absolutely incredible lifestyle. We live in downtown Vancouver, travel extensively all over the world, and save 60-70% of our income consistently. Our net worth is closing in on 400K at this point, and we're looking at retirement in about 2-3 years, in our mid 30s.
So there's one possible route. Something to consider.