Stewardship is lived out in:

living and telling the Good News;
sharing God in seeking justice, peace, and the integrity of creation in an interdependent universe;
wisely employing God-given human resources, abilities, and relationships;
sharing the material resources we hold and giving them in service, justice, and compassion;
providing for future generations, sharing in the life, worship, and responsible stewardship of the Church and of its mission
Both for the individual and for the community, stewardship is a joyful act for the sake of God's world.

This definition comes from the Standing Rules of the Ecumenical Stewardship Center. The Episcopal Church is a founding member of this group and remains active in its continuing work.