Granted, this is not easy, especially when your suitcase is missing and all you have with you is what you're wearing. Bags do get lost. So as a precaution never pack your business presentation with your clothes. And as much as you want to be comfortable during the flight, don't wear something you can't wear to your business meeting. Or if you really have to travel in your sweats, be sure to hand-carry a day's change of clothes.
Delays are moments for fun.
Instead of hounding airline staff and ranting about flight delays or getting bumped off, use these rare moments of free time to play. If you're stuck in a foreign country, take time to unwind at a caf and just people watch. If you're an avid reader, find a local bookstore and read up. Just remember that even if you're on a business trip you should always keep your sense of humor. Depression or loneliness can set in while being away from home and your loved ones for too long.