Rudyard Kipling said that "if you can keep your head when all about you are losing theirs and blaming it on you ... yours is the Earth and everything that’s in it" Things break. No matter how good your plans, something will stop working. No matter how careful you are, something will backfire. You might not be able to avoid catastrophe—but you can plan your response. Learn how to anticipate and mitigate disasters so calamity doesn't destroy what you've built—and how to keep your cool.