tall, one thing I learned for sure is that for counseling to work, they have to be ready to put in the work. My kids started young, and I have been an advocate that everyone could use a counselor, so they had no stigma attached to their going. They tell friends, family, whomever. It's a good thing to see.
Their reactions to stressful situations have changed so much. It has helped them learn to deal with stress, and I can only hope they continue to apply these methods throughout their lives as stress never seems to stop.
Good luck with your son, and good for you to encourage him.