In the Pali language of the early Buddhist texts, vipassana means insight. It is often used to describe one of the two main categories of Buddhist meditation (the other being samatha or tranquillity).
The southern form of Buddhism now found mainly in Thailand, Sri Lanka, and Myanmar. It is the oldest living tradition and its core teachings are based on the word of the Buddha as found in the earliest texts.
Through the concentration states the Theravadans reach in their meditation, they can analyze their state of mind. Whatever disturbing emotions arise such as anger, attachment, jealousy, or envy, based on their ability to concentrate, they are able to analyze the nature of their emotions in subtle detail. This can be compared to a dream where after you wake up, you find that your dream was not real; it was not actually happening.
This school of Buddhism believes that it has remained closest to the original teachings of the Buddha. However, it does not over-emphasise the status of these teachings in a fundamentalist way – they are seen as tools to help people understand the truth, and not as having merit of their own
Theravada Buddhism emphasises attaining self-liberation through one’s own efforts. Meditation and concentration are vital elements of the way to enlightenment. The ideal road is to dedicate oneself to full-time monastic life.