Have any of you ever quit a job with little-to-no backup plan? How did it work out for you?

Just curious. I'm debating quitting my job soon. Worst case scenario I could go back to my old retail job and at least make a couple hundred dollars per week. I have decent savings that will keep a roof over my head, although it would be nice to not eat into that too much. But let's not make this about me. I want to hear about your experiences quitting a job when you had no backup plan.