Narrow down your inputs. Isolate until you feel calm. Yes, this by itself is very difficult and could take a while.
but, if you manage it, begin reintroducing stimuli one at a time and monitor your inner state. Sit with it for a while and see if that experience contributes to a level of unease. Record your impressions. Repeat.
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How does one find what is inducing it?
Narrow down your inputs. Isolate until you feel calm. Yes, this by itself is very difficult and could take a while.
but, if you manage it, begin reintroducing stimuli one at a time and monitor your inner state. Sit with it for a while and see if that experience contributes to a level of unease. Record your impressions. Repeat.