After years spent fighting in some of the world's worst wars, former U.S. Navy SEAL Kristin Beck says she knows what she wants. "I want to have my life," she told CNN's "AC360" in an exclusive Thursday night. "I fought for 20 years for life, liberty and the pursuit of happiness. I want some happiness." Beck recently came out as transgender. She wrote about the experience in a book, "Warrior Princess: A U.S. Navy SEAL's Journey to Coming out Transgender."