I read this article for literally all of 5 seconds before getting pissed off. The answer to this "question" is simple, but you can get 1500 word blog posts voted up for it because nobody wants to hear the answer, which is (1) build a viable startup, and then (2) quit your job. Or! If you're daring and an extremely excellent salesperson, you can try (1) quitting your job and then (2) starting a company.

If you need to think past either of these two strategies before "deciding" whether to start a company, you're not going to start a company.