Epiphanies can be dangerous things! ;-)
My oldest brother is just now leaving his job and moving to Southern CA (Encinidas?) to go to art school more or less full time...though he also does a lot of freelancing (writing and graphic design), so he won't be completely unemployed. Still, I admire his gumption. I'm scared enough of what I'm doing now!
I'm too old and tied down to just up and quit.
At this point I think art has to be an avocation, rather than a vocation.