If we do it with more efficiently by knowing the full method and investment of BTC then it will be great source of income.
And I guess that's why OP is going to leave now his current job because he know that he has a good source of income with bitcoin. That's what I'm thinking now, if I can see that I can be good and stable into something then probably I'm going to leave my current job only if I'm experiencing maltreatment there.
Everyone wants to be their own boss and want to work and earn according to their convenience and that is possible with bitcoins as it gives you an freedom to work on your time and at same time you can also get enough time to spend with your friends and family and if you discover best methods of earning bitcoins then it can surely exceed your income that you are getting from your job.
It is possible with bitcoin but you need to think about it for so many times so that you will not regret in the end. First, with quitting your job, if you have a decent job why there's a need to quit on it. You are treated well and has a good salary. Last, that you did shift to bitcoin or crypto currency and you believed that you can have a decent job with it. So think about it first.
One advice I want to share here is to never quit your day job. That way , if you are earning with bitcoin, you will have multiple stream of income. And that is great. It will also enable us to have financial freedom (multiple stream of income) and secure our future.