Behaviour modification is a therapeutic approach in which we use learning-based strategies to change the negative behavior into positive behavior. Behavior modification approach based on operant conditioning principles according to which rewarding, taken economy, and the understanding of the cause of the action can help the parent to replace the negative behaviour in to positive. Each act has its triggers, and if we understand that, it will be easy for parents to work with the child. This trigger can be anything like sensory overloaded, pain, environment, or changes in routine. If we understand the cause of the behavior, we will be able to do the modifications effectively and quickly.