Based on Bhagavad Gita Chapter 09, Text 11
We may sometimes feel a void within. This sense of incompleteness, even emptiness, in our hearts is due to our not having a satisfying object for our love.
We generally offer our love to the people and things of the world, but experience soon reinforces what we subconsciously know: nothing of this world satisfies our heart’s longing for love. Nonetheless, our longing for love is so indispensable among our core needs that, hoping to find fulfillment somewhere, we keep shifting our love from one object to another. Unfortunately, nothing fills the void; in fact, experience enlarges it as we find more and more objects incapable of filling it.
For some people, this inner void becomes so gigantic that it consumes their entire sense of being — and even their conception of all of existence. Due to being repeatedly disappointed in their attempts to fill the void, they infer mistakenly that the void itself is the undeniable ultimate reality of life. So they make entry into that void the supreme goal of their lives.