Make a joyful noise unto the LORD, all ye lands. Serve the LORD with gladness: come before his presence with singing. Know ye that the LORD he is God: it is he that hath made us, and not we ourselves; we are his people, and the sheep of his pasture. Enter into his gates with thanksgiving, and into his courts with praise: be thankful unto him, and bless his name. For the LORD is good; his mercy is everlasting; and his truth endureth to all generations.—Psalm 100
I have never met a joyful Christian who was not a thankful Christian. Joyfulness and thanksgiving go hand-in-hand. Where there is one, you will find the other.
Oftentimes, we say we should be more thankful. That is true. But, we must understand that to get to verse 4 we must travel through verses 1–3. The root of knowing God and rejoicing in Him will produce the by-product of gratefulness.
When we pray, it is not so much that God might get to know our heart, but that we might get to know His heart. As we go deeper into the heart of God, we will love Him more, worship Him more, and thank Him more.
Find yourself in need of a gratitude adjustment this Thanksgiving? What you really need is an attitude adjustment toward God. Draw nigh to Him. Spend time in personal prayer and fellowship through His Word.
Work on your walk (rejoicing in Him), and your talk (thanksgiving) will follow.