If you have a stable job, don't quit because it is secured that it will give you enough amount of money unlike in Bitcoin which is unpredictable. Instead, do Bitcoin during your spare time. All you need to do is to manage your time so that you can study more about it. However, if you're unhappy and you think the money you get from your day job isn't enough, and you believe that Bitcoin trading can supply your needs, then quit your job and take advantage of your unlimited time to study every information about trading. It's up to you if you're going to take the risk. Make sure not to regret in the end.