The pointers are:
daurmanasya (depression, lassitude, autonomic nervous system imbalances, persistent frustration, pain)
angamejayatva (physical agitation/restlessness, trembling/jitteriness, unsteadiness of the body)
svasa-prashvasah (disturbed, irregular breathing patterns)
One reset tool we can employ is to mindfully focus on and gently regulate the breath:
From Bouanchaud:
Suffering, depression, physical restlessness and disturbed breathing accompany mental dispersion.
From Villoldo:
The clouds that obscure knowledge disturb [our] breathing. Inhale and notice your breath. Exhale and [release] grief, hopelessness and fear... Breathe and dispel the clouds.