1. Boredom, or the trip not being as fun as you expected.
If you mention you’re traveling for longer than a week or two, you often get inundated with comments about how lucky you are or how jealous someone else is. Everyone expects you to be living it up, and if you mention feeling anything less than enthralled with your experience, sometimes they get mad at you. But nonstop excitement is just impossible, even if you’re in the most beautiful and stimulating parts of the world. Everybody gets overwhelmed, overstimulated, or just plain bored, especially without a regular daily routine or long-distance job to keep you motivated. It’s okay to just do what you actually feel like doing. I was so exhausted after three and a half weeks of struggling through Vietnam that I spent my last day in the country in as Western a cafe as I could find, re-reading Anita Diamant’s The Red Tent and eating grilled cheese sandwiches.