bitcoin mining is NOT the as profitable as it used to be. The cut-throat competition, electrical charges, advanced hardware, increased level of difficulty in mining has rendered bitcoin mining lesser profitable. If we look at these challenges at next few years then you could see that mining look more and more pale option for profit making.
Steady income in bitcoin is something rare commodity. There are few which are offering some returns on the bitcoin kind of like fixed deposit. Again these may be fraud who knows. I would focus on steady income from some sources other than bitcoin or for that matter cryptocurrecies.