Eighteen years ago, Karen Blue, known for decades as "Blue," escaped corporate life in Silicon Valley at age 52 to retire and write in Ajijic, Mexico. Blue holds a BS in business management and has had at least seven careers ranging from information systems to business-to-business direct marketing to vice president of an international soft-ware service and support organization. And who knew? She ended up as a published author in Mexico. It took a while for her to put her right brain in motion. She has two grown children and one hunk of a grandson. Over the years, Blue has authored hundreds of