CAUTION: The following quotation is from Benedict XVI, a pope, yes, but also a great theologian. Thus, I recommend a slow, thoughtful reading rather than a skimming.
Because Christian faith demands the individual but wants him for the whole and not for himself, the real basic law of Christian existence is expressed in the preposition "for." ...That is why in the chief Christian sacrament, which forms the center of Christian worship, the existence of Jesus Christ is explained as existence "for many," "for you," as an open existence that makes possible and creates the communication of all with one another through communication in him...
Being a Christian means essentially changing over from being for oneself to being for one another. This also explains what is really meant by the often rather odd-seeming concept of election ("being chosen"). It means, not a preference that leaves the individual undisturbed in himself and divides him from the others, but embarking on the common task....
Accordingly, the basic Christian decision signifies the assent to being a Christian, the abandonment of self-centeredness, and accession to Jesus Christ's existence with its concentration on the whole.
(Pope Benedict XVI: Introduction to Christianity)
As Catholic children, we were taught to say the Morning Offering: O Jesus, through the Immaculate Heart of Mary, I offer you my prayers, works, joys, and sufferings this day in union with the holy sacrifice of the Mass for the salvation of souls, the reparation of sins, the reunion of all Christians, and in particular, for the intentions of our holy father, Pope Francis. (Note: there are many variations of this prayer.)
We were also taught to offer ourselves to the Father in union with the sacrifice/offering of Jesus during every Mass. The "missing link" in the explanation, in my opinion, was what we were offering ourselves FOR. I was never quite sure what the Father would do with my "offering" of myself, or of my prayers, works, joys, and sufferings.
I think Benedict XVI hits the nail on the head when he says that the basic Christian decision means assenting to the abandonment of self-centeredness and agreeing to being FOR others, as Christ is FOR us.
As a mother is FOR her child in every way, from lack of necessary sleep and rest to sacrifice of her own comfort for the welfare of her child;
As a husband and wife are FOR one another to the sacrifice of their own desires and even dreams, at times;
As parents are FOR their children;
As a pastor is FOR his flock,
we, too, are FOR those we love and serve in whatever capacity or assignment is given to us. It is for us as members of the Body of Christ to forget our own interests and to serve the needs of others. And the only way we can do this is to first know that God is FOR US! We cannot forget ourselves and our own interests unless we know that someone (God) will take care of us. Only then can we abandon ourselves into His care and extend our arms to the care of others.