Psalm 118
Many Christians use these words from Psalm 118 to return thanks to God after eating a meal. "Give thanks to the Lord for he is good, his love endures forever."
Jesus gives us reason to have "big picture thanksgiving." But we also have everyday thanksgiving. Even on days we don't feel happy or thankful we can still say, "This is the day the Lord has made, let us rejoice and be glad in it." Each new day is one we get to live under the Lord's goodness and love.