if I have stable bitcoin income, let says 0.5 per day, I quit my day job and give full time on bitcoin, but as of now saving bitcoin is my first priority then learning for some bitcoin investment to get my goal in the future.
I think you should consider you health because you can do that if you work whole day without sleeping but if you have skills that you can used in online i think you can do that. But I think its good if bitcoin threats as side line.
If you want to consider you health then it's better to have a daily job and stop making bitcoin a side-job because your daily job has insurance that will give you secure your health whenever you encounter some life-risk issues about your health. But you will miss the chance to earn in bitcoin and might get a chance to profit big. So the risk is if you want to take a risk of your health then make daily job and bitcoin job simultaneously but if you are worried about your health then just do daily job.