Not Enough Yarn

Sometimes things just don't work out.  A hat pattern and a ball of yarn seemed destined to be together and I was more than halfway done before a feeling of unease set in.  Did I make a mistake on the cables? No, the increases that shape the slouchy, beretishness of this hat made the cabling go askew, and, well, there wasn't going to be enough yarn to finish.  I could buy more yarn but I will rip it out.  There is a better hat to be found for this particular skein.