• Indigo-Children-Characteristics-What-the-Heck-are-Indigo-Children-Anyway-MainPhotoTeach the child to do something that will help him take charge of his tic. For example, if he bites his nails and he learns to identify triggers such as being nervous before an exam, teach him to put his hands in his pockets, or clench his fists as soon as he feels he’s under stress.