beachboy. you seem to be stuck on the concept tht the son nd the fther are one entity. No where in the bible is this made.....in fact the differences are frequent. John 14:28 "the father is greater than I and I will go to him again" Mny time Jesus prayed to his father....obviously he wasnt praying to himself or going back to see himself... 
Simply put Jesus is the son of GOD and they live with the same purpose in mind nd harmony but are 2 different persons....obviously.
I am proud that MOS and beachboy are servants for the christ tho. Of course no one is perfect and we all fall short daily but lets try our best anyway.. 
Answer: To understand Jesus as God on earth praying to His Father in heaven, we need to realize that the eternal Father and the eternal Son had an eternal relationship before Jesus took upon Himself the form of a man. Please read John 5:19-27, particularly verse 23 where Jesus teaches that the Father sent the Son (also see John 15:10). Jesus did not become the Son of God when He was born in Bethlehem. He has always been the Son of God from eternity past, still is the Son of God, and always will be.
Isaiah 9:6 tells us that the Son was given and the Child was born. Jesus was
always part of the tri-unity, along with the Holy Spirit. The tri-unity always existed, the Father God, the Son God, and the Spirit God, not three gods, but one God existing as three persons. Jesus taught that He and His Father are one (John 10:30), meaning that He and His Father are of the same substance and the same essence. The Father, Son and Spirit are three co-equal persons existing as God. These three had, and continue to have, an eternal relationship
Jesus Christ was no less God on earth when praying to His Father in heaven. He was depicting how even in sinless humanity it is necessary to have a vital prayer life in order to do His Father’s will. Jesus' praying to the Father was a demonstration of His relationship within the Trinity and an example for us that we must rely on God through prayer for the strength and wisdom we need. Since Christ, as the God-man, needed to have a vibrant prayer life, so should the follower of Christ today.