" The existential psychotherapy approach posits that the inner conflict bedeviling us issues not only from our struggle with suppressed instinctual strivings or internalized significant adults or shards of forgotten traumatic memories, but also from our confrontation with the “givens” of existence. And what are these “givens” of existence? If we permit our-selves to screen out or “bracket” the everyday concerns of life and reflect deeply upon our situation in the world, we inevitably arrive at the deep structures of existence (the “ultimate concerns,” to use theologian Paul Tillich’s term). "

― Irvin D. Yalom , The Gift of Therapy: An Open Letter to a New Generation of Therapists and Their Patients