To help an aspirant, the Upanishads prescribe certainly focused meditations known as Upasanas...This does not mean that there should be no movement in the mind at all and it should be fixed only on a given shape or sound. There are also Upasanas using a symbol, which is less difficult. There is gain in this thinking, just as the subordinate is treated as the chief...When one is standing or walking, the mind will have to pay attention to the body...For how many days should the Upasana be done?.... It causes the mental form corresponding to the Upasana to emerge at the moment of death.
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