I always thought it must be an awful experience when an airline loses your bag, especially a bag with your most personal and expensive belongings, including any special souvenirs you purchased during your trip. I’d never had that problem; an airline has never lost my luggage—I lost it myself. First of all, I don’t know how it happened to me, how I lost sight of it, but here’s the story. One time, while returning home to the US from a year-long trip in Spain, I was carrying more baggage than my hands and arms could handle. My boyfriend, brother, and a friend were helping out — one bag each —…