For some much needed optimism, I refer you to Mary-Ellen Synon, who writes:
The euro is coming unzipped, and all the eurozone leaders ought to be doing now is preparing for an orderly break-up. But they won’t. They will just go on saying ‘we will do whatever it takes to save the euro’ and coming up with more incoherent and ineffectual plans.
The eurozone leaders are indeed like test pilots caught in a fighter-plane death spiral, unwilling to admit that they have tried everything, and there is nothing left to try.
Read it in full. How I do hope Ms. Synon is right.