general:

muscular/adrenal fatigue: licorice root [infusion]

anxiety/hysteria/emotional sensitivity/depression: caused most often by caffeine and other substance abuse. cases of patients taken off of caffeine who return fully to normal functioning within weeks are on the rise in N. America.

substance abuse: vicious pattern of behaviour, usually undetectable until it has already caused considerable psychological, physical, social damage. sometimes this is alone enough to force a person to stop, but the addiction is persistent, and habit-forming thus a somewhat unconscious behaviour. the best way to combat substance abuse is through coming to understand the value of one's life as it is, in sobriety. however, in cases of very serious addiction it is almost always necessary to seek more than just spiritual counselling or education. a person abuses their body usually unknowingly. substance addiction can begin with recurring "isolated" incidences of drug use.