Do I just quit one day and then start work on it? Will it sound OK to employers in silicon valley if I took 3-6 months off to work on it and had nothing to show for it?
Two things I would advice: - Give yourself somekind of milestone and target date to help keep focus (for instance, working prototype and share with 10 bloggers in 2 months) - Get out there: Go to meetups, etc. Not to sell your thing, but to meet people and when they ask share your idea, progress, experiences and see what questions and advice/ideas they have.
Good luck: It can be awesome!
If you have been living with the idea for few weeks/months are also very passionate about it. Three four nights or weekends are sufficient to start with the sketches and wireframes.
Once you have it ready, show it to few friends, industry experts you know and iterate until you will confident to take the next plunge. Because after that there is no going back.
I used to think that having a prototype was enough but now I hear that is not enough to talk to investors or people. I dunno.
Besides, it's using technology I'm not used to and I need all the practice I can get.