You may not be sleeping well in the night. Very few people are sleeping well, so when you have not slept well in the night you are a little tired.... If that is the case, then do something with your sleep. It should be made deeper. Time is not much of a question – you can sleep for eight hours, and if it is not deep you will feel hungry for sleep, starved – depth is the question. 

If you meditate on open unclouded sky, suddenly you will feel that the mind is disappearing, the mind is dropping away. There will be gaps. Suddenly you will become aware that it is as if the clear sky has entered in you also. There will be intervals. For a time being, thoughts will cease – as if the traffic has ceased and there is no one moving. In the beginning it will be only for moments, but even those moments are transforming. By and by the mind will slow down, bigger gaps will appear. For minutes together there will be no thought, no cloud.

This active meditation uses deep, rapid breathing and body movement to open and bring awareness, vitality and silence to each of the seven chakras and thus into your life.
The accompanying music and bells energetically support the process and indicate the beginning of each stage. The meditation is best done on an empty stomach.

This meditation uses vocal sounds to open and harmonize the chakras or energy centers while bringing awareness to them. It can bring you into a deep, peaceful, inner silence either through making your own vocal sounds, or by just listening to the music and feeling the sounds within you.
The meditation can be done at any time of the day.

I am not against sex, and I am not saying drop sex. I am just saying understand it, meditate over it - don't just go on making love in an unconscious way - and that will become your greatest meditation. Be more conscious, alert, aware and see what is actually happening. Is this moment of bliss coming through sex or because there is no sex any more for a few moments and the desire has disappeared? For a few hours after sex you don't think about sex, hence the peace, the calm, the quiet.

Read one of the most beautiful and most significant Zen story.
Transcribed by Nyogen Sensaki and Paul Reps - Illustrated by Tomikichiro Tokuriki

The bull is the eternal principle of life, truth in action. The ten bulls represent sequent steps in the realization of one's true nature. This sequence is as potent today as it was when Kakuan (1100-1200) developed it from earlier works and made his paintings of the bull.

Taken from the book: Zen Flesh, Zen bones compiled by Paul Reps, Anchor books, NY

TAO TE KING

excerpt:

The tao that can be told is not the eternal Tao.
The name that can be named is not the eternal name.

The unnamable is the eternally real.
Naming is the origin of all particular things.

Free from desire, you realize the mystery.
Caught in desire, you see only the manifestations.

Yet mystery and manifestations arise from the same source.
This source is called darkness.

Darkness within darkness. The gateway to all understanding.

Millions of people miss meditation because meditation has taken on a wrong connotation. It looks very serious, looks gloomy, has something of the church in it, looks as if it is only for people who are dead, or almost dead, who are gloomy, serious, have long faces, who have lost festivity, fun, playfulness, celebration. These are the qualities of meditation. A really meditative person is playful; life is fun for him, life is a leela, a play. He enjoys it tremendously. He is not serious. He is relaxed.

Excerpts from Osho's book

In life, nothing is certain except death.

Secondly: death is not going to happen in the end; it is already happening. It is a process. Just as life is a process, death is a process. We create the now, but life and death are just like your two feet, your two legs. Life and death are both one process. You are dying every moment.

Let me put it in this way: whenever you inhale, it is life, and whenever you exhale, it is death.

Osho says that if the breathing is done correctly in the first stage of this meditation, the carbon dioxide formed in the bloodstream will make you feel as high as Gourishankar, Mt. Everest. This “high” is carried into the subsequent stages of soft gazing, soft and spontaneous movement, and silent stillness.

The meditation is to be done with its specific OSHO Gourishankar Meditation music, which indicates and energetically supports the different stages.
For the music availability, see below.