I couldn’t open the link. I’d say for a small investment you have nothing to lose in trying it.

I’m now on anxiety medication and remove myself from the upsetting situation giving myself positive talk and distracting myself. This has been working well. Then I take note of what happened that set me up to get upset and will try to avoid that. So far I have not yet been successful at that but maybe I can learn. For me the trigger is always the shock of someone who claims to love me acting very much the opposite. This slight is not my imagination. It’s real. I’m just hypersensitive to it when I guess other people are not.