Hi
Consult a psychologist and explain about your sons behaviour in detail. Affirmative sleep talking will help but more information is required in order to determine how effective it will be. Your concern is your son has the tendency to get angry. As a parent you are worried about your son. Try to not worry too much. It is important to know how often he gets angry and how is his relationship with family. It is important know about his behaviour in school.
I suggest you consult a psychiatrist and psychologist and explain about your sons behaviour.
Next Steps
Consult a psychiatrist and psychologist
Health Tips
Contact me for counselling sessions. Along with counselling I can suggest natural foods to calm the mind.