This is why I advise people to develop a working prototype in their free time while they're still employed.
I'm afraid that if I spend my evening and nights into trying my idea, I would either 1/ not get results fast enough and hence loose faith in the project or 2/ get burned out and hence disgusted by the project.
Or maybe it's just the lies I like to tell myself to be comfortable with keeping on procrastinating this...
But most of this start-up advice seems to be geared at single college students, and they'll have enough free time to pull it off.