What qualities are attributes define me as a Christian?
The foremost thing for which the Christian demonstrates gratitude is a forgiveness of sin. (See Alma 24:7-10)
And I also thank my God, yea, my great God, that he hath granted unto us that we might repent of these things, and also that he hath forgiven us of those our many sins and murders which we have committed, and taken away the guilt from our hearts, through the merits of his Son. (Alma 24:10)
This gratitude influences the way in which the Christian holds context for all that happens to them: blessings received, misfortune that befalls them, circumstances that be what they are — gratitude influences it all.
Next time: Study what it means to take up on me the name of Christ as a Christian. Reference Guide to Scriptures.