When you are ready to go to sleep, switch the lights off, get into bed, and sit up in your bed for fifteen minutes. Close your eyes and then start any monotonous nonsense sound, for example, la, la, la – and wait for the mind to supply new sounds. The only thing to be remembered is: those sounds or words should not be of any language that you know. If you know English, German, Italian, then they should not be in Italian, German, English. Any language is allowed that you don’t know: Tibetan, Chinese, Japanese… But if you know Japanese then it is not allowed, then Italian is wonderful. Speak any language that you don’t know. You will be in difficulty for a few seconds only the first day, because how do you speak a language you don’t know? It can be spoken, and once it starts, any sounds, nonsense words – just put the conscious off and allow the unconscious to speak. When the unconscious speaks, the unconscious knows no language. It is a very, very old method. It comes from the Old Testament. In those days it was called glossolalia, and a few churches still use it. They call it “speaking in tongues.” It is a wonderful method, one of the deepest and most penetrating into the unconscious. So start by la, la, la, and then anything that comes, go on with it. Just the first day you will feel it a little difficult. Once it comes, you know the knack of it. Then, for fifteen minutes, use the language that is coming to you, and use it as a language; in fact, you are talking in it. This will relax the conscious so deeply. Fifteen minutes and then just simply lie down and go to sleep. Your sleep will become deeper. Within weeks you will feel a depth in your sleep, and in the morning you will feel completely fresh.