I haven't heard of someone who left their job because of bitcoin. But there are people who can focus on bitcoin and their jobs at the same time. I think if you want to focus try to manage your time and learn more about bitcoin.
I guess I have read somewhere in forum and also one of them is op as he decides and wants to pursue his goal with working full time in bitcoin. If you are focused with bitcoin, it's very easy to manage your time because you are working at your own convenience while staying on your home. But this needs a lot of thinking.