It is possible, but only if you have the necessary skills. But I don't recommend you completely abandon official work. No one knows what will happen with bitcoin in the future. You risk to remain without money and pensions. You will agree with me it is very risky.
Actually, you can really make money without job and if you have great skills you can really do that. In addition to that, I agree that no one knows what will happen with bitcoin in the future. Lastly, you should not abandon your job because it will also help you to make high income.
Right. You cannot depend in only one job and it is better to do both because we cannot predict what will happen in the future. Better not to leave stable job even the salary in working on bitcoin is much higher because having stable job can give you monthly income which can support your daily finances and no delay of receiving the salary. Both can help to have more money that will be enough to save and invest for the future.