based on the theories of behavior therapy, the best strategy can be based on peer groups consultant. let him/her to be interacting with peers who follow a healthy lie style.
Look at the research of R. Paul Lieberman and the use of contingency management and token economy to improve functioning. "Inducements" as mentioned above are reinforcers and also are not bribes. I am unfamiliar with peer group consultant as being part of behavior therapy. It sounds more like psychiatric rehab which is not based on principles of behavior or behavior therapy. Lastly, regardless of direction, be sure the intervention is evidence-based, i.e. there is treatment outcome data to support its use (behavior change).
Social skills should be teach many times to a person who needs to learn how to begin to follow social rules and to integrate into the community. Many techniques are available for this goal.