Christina Clark’s voice trembled when she addressed a ballroom full of people Tuesday morning at Transitions’ annual fundraising breakfast. Less than two years ago, she said, she was living in Anacortes, Wash., mixed up with the wrong crowd and high on drugs. “There was a warrant out for my arrest,” Clark said, “and my 13-year-old son, who didn’t want to have anything to do with me as long as I was using, asked me if I would turn myself in for his birthday.”