Hello!
I quit my software job recently, too. But I have long discounted the possibility of living 100% off my games. It is a dream. But I continue to pursue making games for fun, with the optimism that I could at least generate $50 a month from it.
Before I made the decision to quit, I made sure my finances were OK and that a more frugal lifestyle could be supported by a part-time job doing something less soul-crushing.
I have been making games since 2009. I have probably made $5,000 off of them in that time. Granted, my stuff is a little more "out there" than most.
I wish you luck. I hope that you can find peace in the world and nurture your game development skillz! Maybe I will check out your game!