I got this quote from my boss (Marly) a few years ago. She always told me to be glad that there were problems with our shows because it kept us busy. Here's the quote:
Why You Should Welcome Trouble
"You ought to be glad for the troubles on your job because they provide about half your income. If it were not for the things that go wrong, the difficult people with whom you deal, and the problems of your working day, someone could be found to handle your job for half of what you are being paid. So start looking for more troubles. Learn to handle them cheerfully and with good judgment, as opportunities rather than irritations, and you will find yourself getting ahead at a surprising rate. For there are plenty of big jobs waiting for people who are not afraid of troubles."