In two words:  Probably not.

I always remember the dear lady who came to a chapter meeting, stated she had quit her job, sent her manuscript in three months ago, and by golly, when was she going to get her check from the publisher?  Unfortunately, the meeting erupted into laughter, a pained, knowing laughter, because the simple truth is:  It can take years to become published and even more years to make a living wage at novel writing.

You may be the most wonderful writer to come along in a century, but even the greatest have taken decades to break into the upper echelons and therefore the livable wages.  You should know that a majority of published writers make less than $10,000 per year. 

Let me add that it can also sometimes take years to collect any royalties.  If it takes years (because you have to earn out your advance before royalties kick in), then you can pretty much assume that after so much time any royalty check you then receive will be a lot closer to three digits than to six.  Never, ever think you can rely on "future royalties" to make your mortgage payment.  (At least, not until you can look up your name in Who's Who!)  Your last book may not earn out the way a former one did, your publisher may delay payment, go bankrupt, have a clerical error, or have a different way of interpreting the contract that you have. 

You'll know when it's time to "quit your day job."  But until you're sure, my best advice to you is this:  Keep earning a steady, reliable income while you keep writing.

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