Agreed with others.
I just played Cashflow 101 (The game is good, just stay away from the RK seminars!) last night at a Meetup and in the game, you don't get to quit the "rat race" (read: day job) until your passive income > expenses.
Not only that, you'll need a buffer as your first deals will not be home runs. You'll also probably need financing eventually, which means you'll need a job if you want a bank loan...