How do you deal with being broke?

I'm in my 30s so I should be used to this by now, but this shit is getting so stressful guys. I have no savings, my checking account is drained every month with rent, and if there's ever a serious emergency I have no safety net, I'm legitimately fucked. I'm one unplanned expense away from absolute ruin. Those in the same boat as me, how do you deal with this?