Meditation has been proven to reduce stress and anxiety, making it a useful tool for those who find traveling taxing. Here are a few ways it can make your trips more enjoyable. By Justin Sablich When it comes to mindfulness and meditation, you may think it takes years of training — or a spiritual journey — to derive any benefits. But the essence of the practice is actually quite simple, and its techniques can bring a little relief to many stressful situations, including travel. “We’re talking about a sort of a slightly more sophisticated version of the advice that your mom gave you, when you were a kid, of ‘take a deep breath,’ ” said Dan Harris, the co-anchor of ABC’s “Nightline” and the weekend edition of “Good Morning America” who has authored two books about mindfulness and meditation. “You don’t have to believe in anything. It’s a really simple, secular exercise for your brain,” continued Mr. Harris, whose “10% Happier” smartphone ...