Amongst all the chaos and high levels of stress lately, I had to be reminded that "no one died today." A somewhat morbid thought, but it is also very true and puts things into perspective. In the grand scheme of things, I'm not working in life-or-death scenarios. Yes, there may be hiccups or mistakes or changes that need to be made. But everything will end up working out, and no one will get hurt in the process.
Things will get crazy, but there's no need to stress out unnecessarily. Just breathe, calm down, and remember this.