One of the most important things to do when you travel is to wear or pack comfortable walking shoes. When you are off on a new adventure or trip remember this is not the time to break in a new pair of shoes. You can't imagine how many vacations or business trips have been ruined because someone decided that new shoes would look great. They probably do but the discomfort of breaking them in could break you as well. Wear your heaviest shoes on the day you fly, or take a train or bus. Pack your other shoes. Make sure that the shoes or sneakers that you do most of your walking in have good support and are comfortable. For getting on planes I recommend sneakers with velcro fasteners or slip on shoes that are easy to get in an out of during the security check.
