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.
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.