There's a book I read a few months ago called Quitter: Close the Gap Between Your Day Job and Your Dream Job. The author is Jon Acuff. I highly recommend it to you. You've already received great advice from the other posters! Basically, you should have a plan. There's nothing wrong with quitting, but be smart and have something in place before you do anything rash. But I think you already knew that. I wish you the best of luck in whatever you decide to do! Let us know how it goes!