Formula of prayers...

How should we pray? Is there a formula in prayers that will surely make God answer it? I've heard a lot of different versions of prayers. I still wonder what works for God?

Anyways, whatever method or style, I just keep on praying to God and telling Him the desires of my heart. I believe that God is very intelligent, he knows what is best for us. I just keep on seeking him everyday of my life whatever circumstances I have in my life. I will not go away from Him. He is my refuge.

Thank you Lord! I love you.