Sheer desperation for cash has been my motivation for the past year or so
Have been completely skint, and only really dawned on me a year or so ago that if I actually work a bit harder, I don't have to float around in the doldrums, barely paying my bills....
Set yourself targets... for example, an earning target for the end of the year, a posh holiday, a new car... something that needs saving up for, and tell yourself you'll buy it with cash, can keep you going!