This is an excellent but long discussion
to keep it short: I have quit my stable, good paying daily job 2 years ago, i needed to make a living with something I really like to do, and do it on my terms. So I quit with not much savings, lot of risks, got back in my home country where the standard of living is lower, spend 6-7 months out of the two years living with my parents to save more money, and since lately I moved with my girlfriend in a new apartment, so the things are finally coming back to track with freelancing. I am now happy and very fulfilled that I have taken that step. Now it was quite a challenge, but hey.
The main things are persistence and being able to take risks and do almost unbelievable things (not everybody would stand going back to their parents house, but hey, if you do, it can also open possibilities)
There are many people who would argue that you shouldn’t quit your day job, but I don’t agree with that. I think it is better to just take the step and life will find its way if you work on it.