Vijinanamaya Kosha: WISDOM BODY-INTELLIGENCE. This essence is about awareness, the higher mind, intuitive knowing. We know, decide, judge, & discriminate from the wisdom part of ourselves/our higher consciousness. A healthy 4th kosha supports people to make healthy choices, to develop morals, self-discipline, studious, devoted & to live free from the promptings of instinct or overindulging. 

This is part of the Angelic Koshas Kit.

Written about in the Upanishads, the kosha model navigates an inner journey—

starting from the periphery of the body and moving towards the core of the self: the embodied soul.
The Koshas are energy sheaths that encompass the mind, body and spiritual aspects of consciousness manifested in physical form.
These essences support the optimal function of the Koshas.