The practice of the Concentration on Nirvana helps you to touch the ultimate dimension of reality and establish yourself in the realms of no birth and no death. The Concentrations on Impermanence, Nonself, and Nirvana are enough for us to practice our whole lives. In fact, the three are one. If you touch the nature of impermanence deeply, you touch the nature of nonself (interbeing) and nirvana. One concentration contains all concentrations. You don’t need to do everything.
