'life-changing' originates from the combination of 'life' and 'changing', where 'life' refers to the existence of an individual and 'changing' means to make or become different.

'life-changing' evolved from the simple combination of 'life' and 'change' in English, eventually becoming a common adjective to describe significant personal transformations.

Initially, it meant 'altering one's life', and this meaning has largely remained the same in modern usage.