I don't mean do yoga, although that would probably help you climb through bus windows easily if you want to behave like a monkey and fight your way to a seat during the peak holiday seasons.
I mean be flexible in your plans. You don't have to gripe and bawl and pull out all your hair if your plan goes into pieces.
But maybe I do mean do yoga. It is good for you. It improves flexibility and takes away the stress. Ommm...