"As each one has received a gift, use it to serve one another as good stewards of God's varied grace." (1 Pt 4:10)
Through baptism, God has become our father and we have become members of Jesus' body. This makes us responsible for the good of others. St. Paul puts it in a most eloquent way:
“As a body is one though it has many parts, and all the parts of the body, though many, are one body, so also Christ. For in one Spirit we were all baptized into one body, whether Jews or Greeks, slaves or free persons, and we were all given to drink of one Spirit. Now the body is not a single part, but many. If a foot should say, “Because I am not a hand I do not belong to the body," it does not for this reason belong any less to the body. Or if an ear should say, “Because I am not an eye I do not belong to the body," it does not for this reason belong any less to the body. If the whole body were an eye, where would the hearing be? If the whole body were hearing, where would the sense of smell be? But as it is, God placed the parts, each one of them, in the body as he intended. If they were all one part, where would the body be? But as it is, there are many parts, yet one body. The eye cannot say to the hand, “I do not need you," nor again the head to the feet, “I do not need you." Indeed, the parts of the body that seem to be weaker are all the more necessary, and those parts of the body that we consider less honorable we surround with greater honor, and our less presentable parts are treated with greater propriety, whereas our more presentable parts do not need this. But God has so constructed the body as to give greater honor to a part that is without it, so that there may be no division in the body, but that the parts may have the same concern for one another. If [one] part suffers, all the parts suffer with it; if one part is honored, all the parts share its joy. Now you are Christ's body, and individually parts of it." (1 Cor 12: 12-27)
This video, made by the Diocese of Corpus Christi for the 2014 Catholic Stewardship Appeal, shows the relationship between who we are (baptized, members of Jesus' body) and what we're called to become (good stewards of God's gifts).
So a good steward is (1) one who Prays and receives God's gifts gratefully, (2) Cultivates them responsibly, (3) shares them lovingly and in justice through Service, and (4) Gives them back with increase to the Lord. Let's reflect on each of these components.