I would've liked it if the author factored into account how you would sustain yourself financially after you take the leap or if it is assumed that you save before making that escape.
I agree. For many people the smart escape path is to continue working your soul-sucking corporate job while building your startup on the side. Quit only after you've succeeded in convincing a few people to pay for your product and you know where to find other people just like them. Pretend your corporate job is an angel investor who takes a 0% equity stake (and demands daily 9-5 board meetings).