It frankly wasn't actionable ideas and guarantees that got me back. It was commitment to a plan once I had one, no matter how shitty the interim existence was, and the grace and goodness of other people. You're arguably in a better position if you already have marketable job skills. I was doing performance art for Disneyland. I went back to school after and eventually became this, but that took years before I had anything like an independent, stable adult existence. I was working graveyard shifts cleaning park restrooms and taking 24 credit hours per semester at a community college during the day, for two years, before I got old enough to be eligible for financial aid without having to report my parents' income and assets, and they weren't helping me.
But other people did help. Two women I knew, very good friends from now a long time ago, had parents that let me stay with them. One was a divorced Italian woman who was otherwise alone anyway and the other was a normal family that was rich and had a lot of extra space and didn't mind me taking up a little bit of it. I lived with with those two families when I had nowhere else to go and that was the initial path off the street that gave me the stability to do everything else.
I have no answer for how you find such people who will help you. I would like to say be a kind, gracious person who deserves it, but it's hard to say I was even that. I did nothing to deserve help but people who could helped me anyway. I've spent the past quarter century since then paying it forward and helping out every person I possibly can and even letting a few homeless friends here and there live with me for a couple months at a time, but up to that point in my life, I had done nothing to deserve being helped.