In their encounter with the Eucharist, some men discover that they are called to become ministers of the Altar, other people, that they are called to contemplate the beauty and depth of this mystery, others that they are called to pour out again its impelling force of love on the poor and weak, and others again that they are called to grasp its transforming power in the realities and gestures of everyday life.
Each believer finds in the Eucharist not only the interpretative key of his or her own existence, but the courage to actualize it, indeed to build up, in the diversity of charisms and vocations, the Body of Christ in history.
In the account of the disciples of Emmaus (LK 24,13-35), Saint Luke lets us glimpse what happens in the life of the person who lives in the Eucharist.
When “in the breaking of the bread,” done by the “stranger,” the eyes of the disciples are opened, they realize that their hearts were burning in their breasts while they were listening to Him explain the Scriptures. In those hearts that burn, we can see history and the discovery of every vocation, which is not a transient emotion, but an ever more certain and strong recognition that the Eucharist and Passover of the Son must become ever more the Eucharist and Passover of His disciples.
From XXXVIII World Day of Prayer for Vocations