So God who is always with you & is always sitting in your heart, fulfills all your desires but we are never thankful to Him. From the God, whatever, is asked for, God provides that to his devotees. God is so kind that he provides everything to his devotee even without being asked for. If you have firm faith in God & your wish is pure then God shall certainly fulfill that wish of yours.
All around the world, people in temples, churches, mosques, synagogues beg & pray to God that O! God, "Give us, give us", and the Great Giver gives His Gifts to His devotees in an Invisible Santa Claus way. The Great Giver, the Lord, keeps on giving, while those who receive grow weary of receiving.
In Bhagwat Gita God too assures:
"ananyas cintayanto mam
ye janah paryupasate
yoga-ksemam vahamy aham" (Bhagwat Gita: Chapter Nine verse 22)
"Sri Krishna said to Arjuna: But those who always worship Me with exclusive devotion, meditating on My transcendental form—to them I give what they lack in life, and I protect what they have."
So Lets be thankful to God, whatever, we have received in our life from Him.