Sleeping with your head facing:

North

Increases stability, prosperity, calmness. Hastens healing and recovery from illness. Some say this is the ideal direction, as North is the source of majickal power.

East

Associated with religion and spirituality. Also reflective of intelligence, sharpening mental powers and encouraging freedom of thought. Also said to reduce your temperature, so if you live in a hot area, this may help. The Sun and Moon rise from East to West, so many believe that sleeping with your head to the East, follows a natural cycle.

South

Ancient lore dictates that this position will bring nothing but weariness, and it may cause or aggravate insomnia. Disease is also common to be afflicted on those Southern sleepers. If you are frequently sick, move the bed so your head points North. Or just put the pillow at the foot of the bed.

West

This direction is said to ensure love and spirituality. It also promotes psychic abilities and dream majick practice. Increases sensitivity of all kinds. Known to promote creativity, and so is recommended for artists.