Mettā meditation is considered a good way to calm down a distraught mind by people who consider it to be an antidote to anger.
According to them, someone who has cultivated mettā will not be
easily angered and can quickly subdue anger that arises, being more
caring, more loving, and more likely to love unconditionally.
Recent neurological studies have shown that compassion meditation
can increase one's capabilities for empathy by changing activity in
increase the subject's ability to understand the mental and emotional
states of others as well as deal more effectively with external
The establishment of Zen is traditionally credited to be in China, the Shaolin Temple, by the South Indian Pallava prince-turned-monk Bodhidharma, who came to China to teach a "special transmission outside scriptures"
which "did not stand upon words". The emergence of Zen as a distinct
school of Buddhism was first documented in China in the 7th century AD. It is thought to have developed as an amalgam of various currents in Mahāyāna Buddhist thought—among them the Yogācāra and Mādhyamaka philosophies and the Prajñāpāramitā literature—and of local traditions in China, particularly Taoism and Huáyán Buddhism. From China Zen subsequently spread south to Vietnam, and east to Korea and Japan.