Getting ready for it to go down
In this passage Jesus goes to the garden of Gethsemane on the mount of olives to pray in preparation for His betrayal and crucifixion. As you can see the passage in John isn't identical to the others (you should also note that we jumped from John 13 to John 17. I wasn't sure how to call this as the intervening passages were lots of prayer by Jesus for the Disciples that they would be ready for the challenge ahead & know that the Holy Spirit would always be there to help them. Matthew, Mark, and Luke cover the fervent prayers of Jesus as He asks God to take this death away from Him, if there is another way to save us. Unfortunately there isn't (but hey it doesn't hurt to ask right) I think the things that we can learn from this are.
Jesus showed fear - we shouldn't be afraid to do the same. Pray for what you want - ask for what God wants.