The Head line has the same starting point as the life line (near the thumb) and then goes across the palm. It shows the the way you think. The longer it is the more potential you have. And the clearer it is the more strong-minded / focused you are.

A straight head line shows a practical and logical person. They can be over-analytical, especially when it comes to love.

A gently curving head line shows a balance between the practical and the creative. They have their feet on the ground and are flexible enough to adapt.

A steeply curving head line shows a very imaginative and creative person. They have plenty of ideas and inspiration but can find it difficult to keep their feet on the ground.

A short head line that doesn't go past the middle finger shows a materialistic nature. They can find it difficult to see past their needs.

A head line with a fork at the end of it (underneath the ring finger) is called a writer's fork. Even if you don't write it shows a versatile and adaptable nature. A fork underneath the little finger shows acumen in business or science.