What are the motifs in The Lost Boy by Dave Pelzer?

Fear is a recurring idea throughout the book by a number of the characters, though David's fear is arguably the most tangible. David is first and foremost afraid of his mother. The years of torture and abuse have made him wary of every encounter with his mother. He's learned that he should be afraid when there's a commercial on television, because that's when his mother has time away from her shows to turn her wrath on David. When David is removed from his mother's custody, the fear remains though it is soon joined by additional fears. Once the immediate threat of his mother's torture is removed, David becomes afraid that he'll never have her love. That fear becomes so powerful that he's angry when his mother refuses to acknowledge him. Though David is being cared for through the foster parent program, he's constantly afraid of not being part of his original family.