In our teaching, this particular maturation of practice is an important reason why we emphasize the nondoing meditation at various stages of the path. In the Diamond Approach, we begin with a concentration meditation and, at some point, we transition to the nondoing practice. We learn concentration by focusing on the Kath point, known as the Hara or Tan-t’ien in other traditions. As concentration is established, we let go of that focus and simply let ourselves be. This is the beginning of nondoing. When we let go and simply be, if the concentration has been sufficiently established, then there is stillness and clarity, and we naturally are that stillness and clarity. This stage of nondoing, in which we are simply still and clear, I call “obsidian samadhi.”