If the individual is displaying anger, choose herbs that will not overstimulate or heat up their system, such as spearmint or chamomile. Do not choose a heating root like ginseng in the combination. If the individual is weepy, choose herbs that promote diuresis. When the kidneys flush, they will move out excess fluids and metabolic wastes. Use the tonic long enough to achieve the desired effect.
Longer duration is only acceptable for longevity tonics recommended by an experienced practitioner.
You probably know more about herbs and have been blessed with greater common sense. Become acquainted with as many herbs as you can grow organically or obtain locally. It is better to be well-acquainted with a few herbs than to know little about many. When in doubt, use local compresses, external applications, and aromasignatures before ingesting a questionable tonic. Hearsay and what works for your neighbor is not the safest way to choose a tonic.