The Light of the atman, the Light of the Self, the Light of the Spirit—it was around this that our glorious culture was built in ancient India. This culture was known as atmavidya—the science of the spirit. For spirituality too, is a science, it concerns the discovery of oneself in all.
“To know others is wisdom, to know oneself is enlightenment,” says Tao Tse Ching. Indeed, Socrates realised this truth too, in ancient Greece: that is why his constant refrain to his students was: Know Thyself!
In order to perceive this truth, in order to really know your true self, you must kindle the light within. This is the first and most essential step on the path of sadhana. This will inevitably lead you to the question: Who am I? What is the purpose of my existence here?
The goal is indeed worthy and the efforts you put in to achieve it can only take you higher and higher up on the ladder of spiritual growth.