A person is considered to be dual being: spiritual-material, finite-endless, and temporal-timeless. The author presents the notion of vital field of personality. It characterizes the unity of value-sense and space-temporal existence. The vital field consists of psychological past, psychological present and psychological future. Personal self-determination is thus understood as substantial constructing of one's personal vital field, including totality of individual vital senses and the space of actual and potential real actions. Structural components of personal self-determination are described in their value-sense and space-temporal aspects.