Ask HN: From dreaming to doing

For people who started their own business, what was the final thought that triggered you to go for it? Did you dip your toes in by starting a project as a hobby, or did you take the plunge and leave your job behind to work full time? Did you get funded or was it self funded? Have any regrets or words of advice?

Due to health reasons, I can't put in extra hours on the side , so I'm heavily considering cutting back my normal work hours to invest in a few ideas I have.

I miss freelancing and the feeling of owning a project.