With all due respect to Robert Fulghum, you can learn a lot more traveling than you can in kindergarten.
Here are some of the things I learned from traveling around the world for five years:
Be patient. You will experience flight delays, screwed up food orders and lost hotel reservations. Take it in stride. I once saw someone in Bali start yelling over what amounted to 10-cents. What was the point?
Live simply. Everything you need you can carry in one bag, maybe two. You have no idea how useless most of the stuff you own is until you are forced to go without it.