If a person lacks an imagined goal, or if he forgets it or pretends to forget it, his thoughts will perpetually revolve around his ‘ego’.
“My proud soul! You are the traveler, and this world is a desert. Your impotence and poverty have no limit, and your enemies and needs are endless. Since it is thus, take the name of God and be saved from begging before the whole universe and trembling before every event.”