Hope4Joy, agree with Cat. Therapy early and often. Two of my kids went to therapy at 6 and 9, and while I didn't see it make a difference then, it was a great way to expose them to counseling as a self-care option. The same kids are 21 and 18 now. One is on medication for anxiety and the other is in regular counseling. They are mindful of the state of their mental health and they are using tools at their disposal.
We can't protect them from everything that will hurt them, the best we can do is equip them with tools they need to successfully navigate grief, difficulty and conflict. I know it hurts your heart to watch him hurt - be mindful of not going overboard and doing things for him out of guilt.
