All of these tips are essential. I’ve learned a couple myself lately. Earplugs are truly number one, and not necessarily during travelling (I actually always have a pair with me, just in case I’m going to sleep out of home). Smiling at strangers and saying hello does work indeed. Also, an occasional splurge makes sense. However, I’m still tough at this. And saying YES to some seemingly insecure offers certainly pays off. My two latest cases were horse safari and swimming in a freezing cold mountain waterfall—as you said these have become some of my coolest stories so far.
Invest in Luggage: After you figure out if you will be a “carry-on only” or “check only” type of business traveler, invest in a lightweight, durable piece of luggage that has a warranty. The same goes for a laptop bag. Whether you choose a shoulder bag or backpack, make sure it has a lot of padding and distributes weight evenly. You do not want your luggage breaking in the middle of an airport.