If you want that moment of death to happen in full awareness, you have to live a life of awareness. Otherwise, at that moment, there is no way you are going to be aware. One who is conscious can leave whichever way one wants, but one who is unconscious simply goes in a fixed way—because their life was a bondage, so death is also a bondage. If at the moment of death, a person can be 100 per cent aware, that person will not have to go through rebirth. They will not take another body—they are released.