The Upanishads: Breath of the Eternal, translated by Swami Prabhavananda and Frederick Manchester, (Hollywood: Vedanta Press, 1975), starting at page 82
"He who knows Brahman attains the supreme goal. Brahman is the abiding reality, He is pure knowledge and He is infinity. He who knows that Brahman dwells within the lotus of the heart becomes one with Brahman and enjoys all blessing"
According to the Upanishad, all people are trying to find their true Self. We are the totality of everything, but because we do not know it, we run after desires, any kind of desires. We are running after desires because we do not know our eternal reality, our perfection. All the time we are really seeking our Self. The goal is to know that we already are everything