Is there any emotion regulation training system?
A version of Behavioral Therapy called Dialectical behavior therapy is centered on learning skills to actively regulate emotions. It has been extremely successful in numerous studies for mood disorders, particularly for people experiencing extreme behavioral difficulties relating to past trauma including PTSD and Borderline Personality Disorders which were previously very difficult to resolve in any positive way.
You can find resources in your area if they are available at this website.
Is it perfect? No. But, its the best we have at the moment based on evidence. That's worth something.