This rite confers a "special grace" that helps a person find courage in their suffering.

Deacon-structing the Anointing of the Sick | Part 1 - Salt + Light Media

The is one of the seven sacraments of the Catholic Church, designed to provide spiritual and physical strength to those facing serious illness, old age, or upcoming surgery. Contrary to the common misconception that it is only for the dying, it is a sacrament of healing intended for the living to experience Christ's presence and peace. What the Sacrament Offers