I am sure that you already know that the more you earn it's also the more you spend and it's very important not to spend more than you are earning because you will be a defaulter because am sure with such stand he or she can not pay back his or her depts.
However, one must learn to cut their costs according to their size. Which means if you want to want to begin investment and saving and keeping a standard of life, you should also earn more. But if you are earning lower, you should maintain a certain standards do that you can meet up.