Actually it's not that easy, it's possible, but what I think about it is that it's not sustainable, because I have been in a situation like this in the past, when I will be dependent on a single salary, at every month ending, what I usually does is that I draw down a budget and how I will be allocating funds, because I can't afford to spend wrongly, but still yet, I still go into debt, because it's not just enough due to the current economic situation in the country now, but the best way to survive right now, is not to depend on a single income, because it's really not easy if you do.
Maybe so far almost everyone has felt the same way you feel, so there are many people who no longer depend on just one source of income. Because we remember how difficult it is to meet our daily needs and we also don't want to always be in debt when all our budget funds are not sufficient for our important needs in life. The suggestion to get more income and not depend on just one source is a very good suggestion because only then can anyone be free from debt and also from the difficulties that can befall him at the end of the month.