reading about breathing for some time about respiratory system, disease and all that then u would offcourse exp
anxiety and obsession.
the other u hv to do to avoid compulsion, of thought controlling , supression, avoidance ok
use mindfulness , in this we dont analyse disturbing thought and let them go.
u hv to do first exposure without doing any compulsive behaviour ok
when u feel very anxiety after doing some days.
then
2.