The existential answer is to join with the person in the fullest possible way, and to be in this person's world in the fullest possible way. The more you can wholly share the person's immediate existence, the more you come into existential contact with what is deeper. What is let go is the whole tradition of trying to probe what is deeper inside by being outside the person, talking to the person about what is inside and deeper. The field of psychotherapy almost worships the relationship between therapist and patient. This relationship is practically the foundation of the field.
Existentialism opens a whole new departure.
This model yields its own ways in which therapists and patients can be with one another. Again, the potential impact may be massive. In many contemporary approaches, there are powerful inner forces such as drives, needs, impulses, psychic energies, biological urges, motivations, growth forces, and actualization forces. These generally are understood as propelling the person along developmental stages that are biological, psychological, social, or some combination of these, and the direction is toward maturity, growth, full development, normality, and adulthood. In addition to grand internal forces, there are grand external forces in the form of family, groups, society, the whole universe of external influences, and stimuli.