"Worrying about the past or the future isn't productive. When you start chastising yourself for past mistakes, or seeing disaster around every corner, stop and take a breath and ask yourself what you can do right now to succeed."

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One thing you learn doing magic tricks for a living is how close every performance of every magic trick is to disaster. There are no robust magic tricks. They're all hanging from a thread - sometimes literally.

— Penn Jillette