The paper presents an ontological conceptualization of the phenomenon
of extremity, which is considered in the context of personality transformation
in the trans-ordinary world. Methodological principles and scientific logic of
conceptualization are proposed and specified in the following concepts: the
experience of being and non-being, personality work, meaning and behavioral
personality work, positive and negative extremity, the meaning of life and the
meaning of death, the nature of the construction of psychological effects of
extremity — psychic trauma and personal transformation.
