Oops, if you are expecting to have a stable source of income through crypto then I think this is impossible since the market naturally fluctuates (sometimes you're in the top and somtimes in the bottom). So do not only depend on this, yes you can uplift your life by earning crypto but I guess not enough to sustain your whole family unless you hoard btc in its cheap days and hodl until now. You should still find a job where you can make a decent salary and set your coins as a supporting asset .