Personality changes, even extreme changes are not uncommon. This apathy or indifference may be just that.

I used to do the 'kick the inanimate object' response in anger. I destroyed a cooler chest. Boxes make a good target. They are cheap and don't make you feel like such an idiot. Busting up valuable thinks has longer term repercussions.

It takes a group effort to reduce these situations. People need to let you walk away from confrontation. The specific dynamics to your situation need to be kept in context. My success in this area has to do with my family dynamics.

I wish you success with this. I know how upsetting it can be.

My best to you.