I think that the best way fot this, a steady income over time, is buying in the all time low, and then wait for a long time or you can do some trading with cryptos.
You need to take a job if you want a steady income because Bitcoin is everything accept steady for me, there have been times when I made much money and times when I made no money.
Bitcoin is not steady and that is why I do not really on Bitcoin.
That's right there is no fixed income in bitcoins and that is the most risky part of it, sometimes you may earn huge and sometimes may be left with nothing in hands, so its better to have full time job for steady income.