The 10th commandment given to Moses says, "Thou shalt not covet thy neighbour’s house, thou shalt not covet thy neighbour’s wife, nor his manservant, nor his maidservant, nor his ox, nor his ass, nor any thing that is thy neighbour’s."1 Gratitude is the quick cure for jealousy. If we can remember everything that we have been blessed with we will be slow to covet other people's things. President Thomas S. Monson has said, "Regardless of our circumstances, each of us has much for which to be grateful if we will but pause and contemplate our blessings."2
See what the Church of Jesus Christ of Latter-day Saints believes about gratitude.