Welcome Imma! Great to see folks from all over the world on the thread.
Thanks! I'm also happy to meet some mustachians that aren't wealthy (yet!). Sometimes it feels like everyone on here has a high income and lots of money. It's more motivating to join a group of people in a similar situation.
Totally agree, Imma! I am very fortunate to make solid money now (~$45k, with a combined household income of ~$88k although we keep finances mostly separate), but I started out at $20k/year and made less than that for two years in grad school. I'll admit that I get a little eyeroll-y at people sometimes--like, OMG, congratulations on saving 70% of the $250,000 you make every year! It must take so much self-sacrifice to survive on $20k/year more than my total salary! Not that I'm not supportive of people in that boat making the right decisions for their individual circumstances, that's awesome for them, it's just SUCH a different calculus.
But regardless of your income level, being frugal, taking the long view, maximizing opportunities when they come your way, and having some luck can help anyone at any income level make progress towards FI. When I was netting $1,462/month, I did my best to save $125 every month in a Roth IRA, and saved up to an emergency fund of around $2,000. When I ended that job, the Roth was worth $2,700; I kept chipping in as best as I could in grad school, worked for another year at $30k, and it's now worth over $8,000. That $2,000 emergency fund kept me from ever having to go into credit card debt. I'm also very privileged and fortunate to have avoided any health problems or unemployment; to have a parent who modeled frugality and who I could always talk to about money; and to have received the $12,000 windfall I mentioned in my OP. My NW is about $44k, which is just absolutely mind-boggling to me compared to where I was when I graduated from college in 2010. So no matter where you're starting from, no matter what your income is, you do have the power to help yourself towards financial security.
And I also know, which I think is just as valuable for my peace of mind, that I can survive making $20,000 per year if I ever had to again.