"Setting boundaries is a crucial piece of the program," Margolin said. "The more you hold boundaries, the more you will see a shift in behaviour." Gallant used screen time as an example. "If you tell your kid they have to put their iPad away, and then give in when they freak out, they learn that if they freak out more, they get what they want." Consistency is key. Boundaries take a lot of repetition, but your persistence will pay off.