In each of the ‘last rites’ I have used the wonderful centuries old ‘sending on’ prayer the Proficiscere (here in a shortened version) - Go forth from this world, O Christian soul: in the love of God the Father who created you, in the mercy of Jesus Christ who redeemed you, in the power of the Holy Spirit who strengthens you. May the heavenly host sustain you and the company of heaven enfold you. In communion with all the faithful, may you dwell this day in peace. Amen.
Like all the sacraments, holy anointing was instituted by Jesus Christ during his earthly ministry. The Catechism explains, "This sacred anointing of the sick was instituted by Christ our Lord as a true and proper sacrament of the New Testament. It is alluded to indeed by Mark, but is recommended to the faithful and promulgated by James the apostle and brother of the Lord" (CCC 1511; Mark 6:13; Jas. 5:14-15).
The CME of adaptation and change relates to the sacrament of anointing of the sick because this sacrament can help you adapt to life after death and can give you hope even if there seems like there is none.