Fortune favors the brave, but I would say don't quit the day job. Try to 'borrow' 20% to work on your hustle as a hobby project - the company will almost surely get that time back in increased quality and productivity in your day job. I did that 25 years ago, then lucked out by making an initial bootstrap sale that got the ball rolling. My first effort ran for a dozen years, but since then I've been side hustling my side hustle. It's fun to follow your interests, but it's not a good way to have work/life balance.

So much of people's outcome is based on luck, which I got more than my share of. The best advice that I got, however (that you also have to be lucky to take), is to find like minded people and do something with a partner or group.