Abstract
Existential analytic concepts of man's living in the world, of its disturbances and of its meaning-centered (logo-) therapy are outlined and explained. Man's spiritual openess toward exercising his freedom and responsibility in his pursuit of meaningful living through conscience-based realization of objective situational values is his main truly human cognitive as well as motivational characteristic.
The fulfilment of this striving for meaningful purpose in life is independent of his outer limitations as well as of his apparent achievements, failures, or suffering. The noogenic sources in selected neurotic, psychosomatic, and psychotic disturbances are outlined and the main logodiagnostic and logotherapeutic approaches, utilizing the spiritual abilities of self-distancing and self-transcendence, to overcoming them are characterized.