When you switch off light, darkness sets in. It is not the coming and going of light. Darkness is absence of light. So also, absence of awareness is anatma . It is an illusion or Brama .
People do meditation, bhajan etc.
It is only for mental satisfaction. Actually, the one who meditates, the act of meditation and the object are all one. One who knows this truth need not do anything at all. Before you say, I am Brahman , you should know I first. Ekam eva adhvitheeyam Brahma .