"Jesus asked Himself if this cup could pass him by. He didn’t listen to Himself."
When the Creator and Upholder of the Universe made a human body and filled that body as a hand fills a glove (Jesus was "the express image of the invisible God") He didn't cease to be the omnipotent Creator and Upholder of all things. Jesus was fully Man and fully God, but in the incarnation He was limited to time, space, hunger, thirst, all so that He could suffer the pain of death, to save us from Eternal Justice.
 See Hebrews 1:1-3, John 1:1-12.
 See Hebrews 2:9