In the same boat. I was a SAHM, then got divorced. Found a great job I loved, started to get on my feet, and then my company closed. Had to relocate across the country, got taken by a crooked lawyer, had to take my ex to court (represented myself and won!) and now I have a really solid job, but the single mom thing is tough. I'm in debt, but it's not horrible.
I think the takeaway is that anything is possible with enough determination, discipline and hustle. Keep your eye on the prize and I'm sure you'll get there!