Angelina Jolie feels lonely because of her dedication to her work. The 49-year-old actress portrays late opera singer Maria Callas in new biopic ‘Maria’ and she feels they have a “certain loneliness” in common, which comes from a strong commitment to their careers. She told People magazine about their shared traits: “I don’t want to speak too much about it because it’s too personal, but there’s definitely a loneliness and a work ethic,” she says of her connection to Callas. “I may be many things, but I’m a very hard worker, right? “I’m an imperfect person, but I work very hard and she does.” A…