How can the principles of behaviour applied to operant conditioning changing behavior?

Choose a bad habit or other undesirable behavior that you would like to change in yourself, a child, or a pet. Describe the behavior briefly and explain why it continues even though it is undesirable. What reinforces the behavior? Using the principles of operant conditioning, design a plan to change the behavior by substituting a more desirable behavior for the unwanted one. This may involve several processes including extinction of the original behavior and reinforcement of a replacement behavior. Describe the steps involved using the appropriate terminology related to operant conditioning.
Write a 750 to 1000 word response to the above assignment. Use information from the textbook and at least one other source of information. The source should be specific to the topic and not an encyclopedia or other general reference. Preferred sources are professional (peer-reviewed) journal articles, books related to psychology, or psychology-specific Internet sources. Be sure to use APA style citations and reference listings to document sources of information