One thing I have learnt during this time is that one should have backup ready so that not depending on a single income itself. Something financially, one should be doing various things so that in some way or other you can become financially strong. Also saving is important thing now and cutting the credit cards bills in coming years will be important thing.
Saving includes not-investing in something long term or sketchy or high risk at all
But mainly yeah - do not rely on one way of income otherwise chances are you'll be screwed