The result of practicing meditation is realization and experience. Meditation experiences are temporary and come rather quickly. Realization, however, is attained through the gradual process of meditation and is lasting. One has to work on attaining realization, and one should have no attachment to the experience of meditation whether good or bad.

- Thrangu Rinpoche, The Practice of Tranquillity & Insight: A Guide to Tibetan Buddhist Meditation