I'm building a product now while I'm doing my day job. It's not yet sustainable yet, but I've been spending time on it constantly. It pays my rent, that itself

I'm building a product now while I'm doing my day job. It's not yet sustainable yet, but I've been spending time on it constantly. It pays my rent, that itself is a huge thing for me. I would not advise you to quit your job. You can quit your job when your side project makes money equal to your salary. Set that as a bench mark and work towards that. Good luck!