But high stress can do some amazing things to your brain.
And immediately when I found this out I use it at my advantage.
For years I worked on my project with results like "a step forward, two steps behind". So I quit my job with only a few thousands $$ and put as much stress on my "system".
I found my "eureka moment" a few days before I ran out of $$.
They call this the survival instinct.
I think it's great that you succeeded but you shouldn't generalize your experience. I also put everything on the line for a business idea and failed miserably with a lot of debt. There are a lot of factors involved in success. It's not only persistence.