How do I, a person who deals with being excited and anxious by getting overwhelmed, teach my kid how to deal with being excited and anxious in a different way? I have no idea.

The other parent isn't helpful (doesn't get excited and anxious in this way).

#ActuallyAutistic

@quidcumque What has been helping me recently is something I read in an article (don't have the source at hand) about emotional resiliency.
It said that participants who reported their physical state (elevated heart rate, dry mouth, etc.) rather than their emotional state (anxious, afraid, etc.) or their thoughts (I didn't finish my task, they sounded angry on the phone, etc.) returned to their baseline state much quicker.
I have been trying to consciously use this, i.e. focusing on my body rather than my mind, and it often works quite well.