If you say today in our generation there many people who are investing on bitcoin, but in the sense that most of them did not leave their jobs. Maybe some did because they think that they can earn more in bitcoin, that's alright but it all depends also in your profession. Most of the time those who leave their jobs because they are a graphic designers, programmers and etc... They can connect to bitcoin and make income on it because it is related to their field but if you are just a cook or like a teacher or a carpenter and want to earn some bitcoin, investing is good you can gain from it in the future but leaving your job is not the best idea. You can keep your job while doing bitcoin. Most people do that because if you are just an ordinary person there is no way you can  pay your bills and buy grocery on just doing bitcoin. Just keep you job and invest, take time for just 1 hour everyday in bitcoin. That will do it. Hope it helps