Be anxious for nothing, but in everything by prayer and supplication, with thanksgiving, let your requests be made known to God;
(Philippines 4:6)

When you thank God in advance for your needs, you are abiding and living in the highest form of Faith in God.  Thanking Him in advance tells God that you totally trust Him to supply your needs.  Colossians 4:2 states, “Continue earnestly in prayer, being vigilant in it with thanksgiving.”  When you thank Him in advance in your prayers daily, you build a image in your heart of the answered prayer.  In Mark 11:24 Jesus teaches, “Therefore I say to you, whatever things you ask when you pray, believe that you receive them, and you will have them.”  The greater your thanksgiving grows daily the greater your faith will grow!

Thanking God is also the highest form of praise.  He created you to praise Him!  When you continually thank Him you are praising Him.  The greatest gift you can give to the Father God Almighty and the Lord Jesus Christ is to praise and thank Him for His love and goodness.  Psalm 71:8 admonishes, “Let my mouth be filled with your praise and with your glory all the day.”  Thanking Him casts your cares upon Him, so He can take care of you.

Casting the whole of your care [all your anxieties, all your worries, all your concerns, once and for all] on Him, for He cares for you affectionately and cares about you watchfully.
(1 Peter 5:7, Amplified Bible)

Living a life filled with praying in the Spirit and thanksgiving will dramatically change your life and all those around you in a amazing supernatural miraculous way!

That I may proclaim with the voice of thanksgiving, And tell of all Your wondrous works.
(Psalm 26:7)
I will praise the name of God with a song, And will magnify Him with thanksgiving.
(Psalm 69:30)
Indeed it came to pass, when the trumpeters and singers were as one, to make one sound to be heard in praising and thanking the LORD, and when they lifted up their voice with the trumpets and cymbals and instruments of music, and praised the LORD, saying: “For He is good, For His mercy endures forever,” that the house, the house of the LORD, was filled with a cloud, so that the priests could not continue ministering because of the cloud; for the glory of the LORD filled the house of God.
(2 Chronicles 5:13-14)