But you have a job, you don't need to do that. You can write part-time, focus on short stories, get a better idea of where your current ability level is, decide if it's a hobby you do want to pursue and to what extent, join critique groups, and then try to get published in short fiction markets. Short form lets you complete something, have it evaluated, withoug having sunk multiple years into a single manuscript.
The last thing an aspiring writer with a full-time job should do is get emotionally invested in a single novel that takes years to finish and never goes anywhere because they never learned to write fiction properly in the first place.
Don't try to be an international bestseller. Just find a smaller group of true fans.
See: Kevin Kelly
See: Seth Godin <-- where I get much of my inspiration. He's REALLY good.
Oh yeah... don't stop coding. Keep your day job. Write on the side. Fund your dream. ;)
What's sad is that I would have to be an international best seller to make more than I do as a software engineer, even if I published regularly; writing would not pay my bay area mortgage, and I'd lose out on tons of perks at work.
Trapped in the gilded cage.