Prayer is communion with God, it symbolizes that we are in a relationship but we mainly use it to ask. God knows what we need and can give us without us praying. Check how many things you have that you did not pray for. Genesis 2:18 And the LORD God said, “It is not good that man should be alone; I will make him a helper comparable to him.”
We are predestined and what we are going to be and do is already so in the spirit. Since we are predestined, God already know what we will require in this journey. Romans 8:29-30 For whom He foreknew, He also predestined to be conformed to the image of His Son, that He might be the firstborn among many brethren. Moreover whom He predestined, these He also called; whom He called, these He also justified; and whom He justified, these He also glorified.