Courtesy of Jessica BuchananJessica Buchanan survived 93 days as a hostage, sleeping outside and losing about 40 pounds.With little in her control, Buchanan said protecting her mind became key to surviving.After years of PTSD and anxiety, Buchanan returned to teaching and found purpose in sharing her story.Jessica Buchanan spent 93 days wondering whether she would make it home alive. In 2011, she and her colleague were captured and held hostage …