In the West, we have everything we could possibly need or want—except for peace of mind.      So writes Linda Leaming, a harried American who traveled from Nashville, Tennessee, to the rugged Himalayan nation of Bhutan—sometimes called the happiest place on Earth—to teach English and unlearn her politicized and polarized, energetic and impatient way of life.      In Bhutan, if I have three things to do in a week, it’s considered busy. In the U.S., I have at least three things to do between breakfast and lunch.      After losing her luggage immediately upon arrival, Leaming realized that she also had emotional baggage—a tendency toward inaction, a touch of self-absorption, and a hundred other trite, stupid, embarrassing, and inconsequential things—that needed to get lost as well.