My 7th grade social studies teacher once quipped that my high school's literary magazine should be renamed as "ANGST". He had a point. The vast majority of the poems in there was inspired by teenage hormonal moments, and truly philosophical/cerebral poems were rare (I happen to personally know two of the more brilliant writers over the span of 6 years... one is in a med school in NY and the other is at Yale law.)
ANGST has a way of recursively feeding off of itself. Unless otherwise distracted, it will lock itself in an ever-expanding loop of irrationality, where all events occurring after t = tANGST are phase-shifted toward the hot-end of the spectrum.
To break the cycle, the ANGSTY person must find a suitable source of digression. This can be rather difficult as the person is often fiendishly possessed by the ANGST and thus determined to remain angry at anything and everything.
If a source of digression cannot be found, time is usually a reliable way of diffusing ANGST, as ANGST tends to follow an exponential decay (but with rather long time constants like certain radioactive decay... like people not speaking for years and years)
For which cases, the sources of ANGST would need to be identified and addressed.