Traditional Chinese medicine says that anger is "stored in the liver". I suspect you are taking too much milk thistle. Yes, this herb is good for the liver, but too much is stressing the organ system you are trying to heal.
Probably in a few days of eating some good normal food and avoiding any herbs or medicines will get you back to a normal mood.
The Chinese herb bupleurum acts the same way. People with liver troubles are advised to consume it in a balanced formula prescribed by a practitioner who knows what she is doing.