God asks that we give thanks to Him for whatever blessings we receive from Him. It is easy for us to become mechanical in our prayers of gratitude, often repeating the same words but without the intent to give our thanks as a gift of the heart to God. We are to “give thanks … in the Spirit” (D&C 46:32) so we can feel real gratitude for what God has given us.
How can we remember even a part of all God has done for us? The Apostle John recorded what the Savior taught us about a gift of remembrance that comes through the gift of the Holy Ghost: “But the Comforter, which is the Holy Ghost, whom the Father will send in my name, he shall teach you all things, and bring all things to your remembrance, whatsoever I have said unto you” (John 14:26).
Supplemental ideas: Watch this video inspired by a talk from President Thomas S. Monson.