Self-advocacy is not an innate skill for everyone. Children, especially, are often unfamiliar with the concept. This is because, for the most part, many of their needs have been met before they even ask.
In order to introduce self-advocacy skills, parents have to ignore the natural instinct to step in and assist and instead allow their children to recognize, specify, and vocalize their needs. These three aspects are crucial for enacting self-advocacy: children must have opportunities to recognize when they need something; they then need practice identifying exactly what they need that is going to help them through the task or challenge; finally, they need communicative skills to relay that information to others who can provide assistance.