“If it is difficult to control the direction of your attention while in a state akin to sleep, you may find gazing fixedly into an object verN helpful. Do not look at its surface but into and beyond any plain object such as a wall, a carpet, or any other object \\ hich possesses depth. Arrange it to return as little reflection as possible. Imagine then that in this depth you are seeing and hearing what you want to see and hear until your attention is exclusively occupied by the imagined state.”