The Savior's Suffering in the Garden of Gethsemane

Matthew 26: 36-46 describes Christ's feelings as "sorrowful" and "heavy", meaning distressed and troubled.
Mark 14:32-42 describes Christ's feelings as "sore amazed, and to be very heavy", meaning amazed, awestruck, astonished, depressed, dejected, and in anguish.
Luke 22:39-46 describes Christ's feelings as "agony", meaning pain
Mosiah 3:7 says, "And lo, he shall suffer temptations, and pain of body, hunger, thirst, and fatigue, even more than man can suffer, except it be unto death; for behold, blood cometh from every pore, so great shall be his anguish for the wickedness and the abominations of his people."
Alma 7:11-13 talks about how he does this all for His people, "And he will take upon him death, that he may loose the bands of death which bind his people' and he will take upon him their infirmities, that his bowels may be filled with mercy, according to the flesh, that he may know according to the flesh how to succor his people according to their infirmities."
D&C 19:16-19 says that Christ did this all for us so that we would not have to suffer as he did, "Nevertheless, glory be to the Father, and I partook and finished my preparations unto the children of men."
The word Gethsemane means "olive press". This gives insight to the experience Christ went through there that night. Olives are pressed and squeezed free of it's oils and refined into olive oil. That night Christ was pressed and put under a great deal of pressure so that in the end He could come out refined and pure. He had finished the task He came to do.
While Christ was enduring such pain, His disciples were sleeping. We always wonder why they couldn't just stay awake- but they were probably there for hours and it was dark and in the middle of the night. We would all probably fall asleep too! Christ says that "the spirit is willing but the flesh is week". They were all there supporting Christ and had every intention of staying awake- but when it came to it, their mortal bodies were overcome with sleep. But Christ also said to pray always so that we can be victorious in the end and have the power to throw off temptation and evil! Through Christ and our GOd, we can have the power to do anything!
So why did Christ "drink the cup"?:
Mosiah 15:7 because it was the will of the Father
3 Nephi 11:11 because of the will of the Father and for all of mankind
D&C 19:19 to give Glory to God
In all accounts, Christ asks the Father if there is any other way for the atonement to happen, because the pain and suffering Christ is going through is so exhausting and so overwhelming. But in every account, Christ also always says, "nevertheless, not my will but thy will be done." Christ knew ultimately that it was God's will that would supersede his own wants. He was willing to do as the Father asked of him, even though it was hard and He didn't want to.
At one point during Christ's suffering things took a turn for the worst and it talks about how Christ began to pray more urgently and more exceedingly and so on. Some times when we are down or things aren't going very well in our lives, we don't much feel like praying. But here we see that it gave Christ strength to go on and to finish the task he began!
There is so much to learn from Christ's example here in the Garden of Gethsemane! We need to be more willing to follow God's will instead of out own- and to seek out His will above our own! We need to think of others as well instead of being selfish. ANd lastly, we need to pray more diligently and earnestly!