Not OP, but I quit 10 years ago without a clear plan with around 1.5 years of runway. Did a bit of freelancing after that and now run my own company. I'm usually more on the risk-averse side of things, but that felt safe enough for me.
Exclusively from previous work relationships. Mostly around network infrastructure stuff (BGP automation) and e-commerce full-stack development and operation. I explicitly only took gigs that where very clear in scope to ensure I had enough time to try out my own ideas.
