Kenny, I admire your courage. I also shudder to think of what huge decision you've made in quitting your job. So, while I admire your courage I also think you've been a bit mad (please don't take offence I don't mean it in the psychiatric way).
But I'm not you, I don't know your circumstances so I can't really judge (and I wouldn't want to judge even if I would know all about you).
There is also the fact that many worthy things have been achieved only after a moment of madness. In fact, a great deal of fiction has been and is written in support of this trope.
Still, when I read that you quit your job I got a sudden bat feeling in my stomach. I'm terrified of losing my job.
As for writing, I like to pretend (to myself and definitely to others) that I'm not really into writing at all and and I have no intention of writing, or not now anyway.
And yet, at least once a year, I get a new idea and an urge for "the novel" (nothing literary, I would like to write Fantasy or SF), I spend a week or so having it churn in my brain, then I spend 2-3 days writing notes and a lumpy outline. I then write a scene or two and then...
And then I stop, after reading the rubbish scenes and after reading the outline and realizing that I'm not a writer.
I'm also really good at finding excuses of why I can't write now and that after I deal with <
insert current family/work problem here> I'll definitely start and finish my book.
And so this happened in 2012 too...