If you stumble when you leave your house at the beginning of your journey or stumble more than once during the course of your journey, you are advised to postpone or end the trip and return home.
It’s bad luck to turn in the direction of your home once you have left on a journey.
If you’ve forgotten something at home it’s bad luck to go back to get it. You can reverse the bad luck in this situation by sitting down and counting to 10 or by looking at yourself in a mirror right before leaving again.
When someone is leaving on a journey it’s bad luck to watch them go until they are completely out of site, it means you will never see them again.