Well it depends a bit on the writer. Apart from losing your whole manuscript, which pretty much destroys writers globally, and apart from rejection, which is a right of passage more than a catastrophe.
For me the answer is simple - you can't have coffee. My cappuccino /espresso machine broke on the weekend. Can you imagine the horror? How can anyone write without caffeine?
We all have our vices I know writers who guzzle the diet coke and others who have Tim Tams, Skittles or M&M's on tap but for me it's caffeine.
I'm happy to report after two days of running out for take-away coffee (or take-out as they say in America) my lovely husband has repaired the machine and I'm back in business.
Let the writing continue!
if you're a writer or even a reader - what's your creative crutch?