Always be full of joy in the Lord. I say it again – rejoice! – Philippians 4:4 NLT

May God, the source of hope, fill you with all joy and peace by means of your faith in him, so that your hope will continue to grow by the power of the Holy Spirit. – Romans 15:13 GNT

Rejoice always, pray without ceasing, in everything give thanks; for this is the will of God in Christ Jesus for you. – 1 Thessalonians 5:16-18 NKJV

My brethren, count it all joy when you fall into various trials, knowing that the testing of your faith produces patience. - James 1:2-3 NKJV

I have told you these things so that you will be filled with My joy. Yes, your joy will overflow! – John 15:11 NLT

You will show me the way of life, granting me the joy of your presence and the pleasures of living with you forever. - Psalm 16:11 NLT

Then he said to them, “Go your way, eat the fat, drink the sweet, and send portions to those for whom nothing is prepared; for this day is holy to our Lord. Do not sorrow, for the joy of the Lord is your strength.” - Nehemiah 8:10 NKJV

looking unto Jesus, the Author and Finisher of our faith, who for the joy that was set before Him endured the cross, despising the shame, and has sat down at the right hand of the throne of God. - Hebrews 12:2 NKJV

And the angel said to them, “Fear not, for behold, I bring you good news of great joy that will be for all the people.”
Luke 2:10 – ESV

I delight greatly in the Lord; my soul rejoices in my God. For he has clothed me with garments of salvation and arrayed me in a robe of his righteousness, as a bridegroom adorns his head like a priest, and as a bride adorns herself with her jewels. - Isaiah 61:10 NIV

Though the fig tree does not blossom and there is no fruit on the vines, though the yield of the olive fails and the fields produce no food, though the flock is cut off from the fold
and there are no cattle in the stalls, yet I will [choose to] rejoice in the LORD; I will [choose to] shout in exultation in the [victorious] God of my salvation!- Habakkuk 3:17-18 GNT

Say this prayer aloud:
ALMIGHTY GOD! You are the JOY of my salvation! You are my Deliverance, my Healer, my Prosperity, my Peace! I am elated, exuberant, and triumphant in Your Presence. My lips will shout for JOY from the rising to the setting of the sun. I am strong in You because the Joy of the LORD is my strength. You are worthy of my praise. All the glory, all the honor, goes to You, my Heavenly Father! I choose JOY because You told me to...and You never tell me to do anything that I can't actually do! I put a smile on my face, even if my feelings don't feel like it. Feelings are temporary, but God, You reign FOREVER! In Jesus's name, AMEN!