Let's crucify all our passions, and offer all our belongings as a burning sacrifice on the altar of the Cross, and He will purify them from all selfishness. Let's spread every moment and detail of our life on that eternal altar. This is the uniqueness of Jesus' disciples. They follow Him, that is they go after His steps. The Cross is an altar that radically changes our life, from a life of thieves to a life of priests.
Selfishness is theft, and love is priesthood.
Carrying the Cross is nothing but fasting. Practically, Lent is a continuous surgical operation to heal our selfishness. Lent turns us into priests of the divine love, living not for ourselves, but for others as our Master did. Lent goes hand in hand with the Cross, as love with the altar. The Cross is the altar of self-sacrifice.