Anger, frustration and resentment are the emotions of the liver. As the liver strives to find its balance and smooth flow you might notice some of these emotions come up.
No emotions are good or bad, they only become pathological when we don’t release or express them in a healthy way. Part of detoxing means the emotional detox as well.
Traditional Chinese Medicine and acupuncture along with somatic practices such as breathwork can help move stagnant emotions.