We love him, because He first loved us.
I believe what brother curtis was saying or giving was simply an Example to what you posted...
You my friend said, do unto others as you would have them do unto you.
Brother Curtis used 1John 4:19 as an example by action of Love that God did and does. In fact what about Jesus, it was not the nails that held Him on the cross but yet His Love for us Even when we were still sinners. AND Jesus forgave them.
Would you not want to be forgiven? Well OK forgive others.
You said this was hard.....nah not really. Simply make up your mind to be obedient and Love and Forgive. The act it's self is Not what is hard, it's how strong you have allowed your Flesh become.
That's your fight or rather where you must suffer as Jesus suffered. Overcoming You. Not allowing You to have its way but rather walking God's way.
This relates to the true pathway of humility which is the pathway that Jesus walked to the end...
"Let nothing be done through strife or vainglory; but in lowliness of mind let each esteem other better than themselves." Phil 2:3
That is what Jesus did. Remembering that he took on the form of a man with all of the temptations of a man. His flesh like our flesh did not want to suffer torture and death, but he knew His Father's will. He understood why he had to love you and me more than he loved the flesh of his own body of flesh.
Can we do the same? Not alone, but one reason for the sacrifice of Jesus was so that we could do the impossible:
"...With men it is impossible, but not with God: for with God all things are possible." Mark 10:27
"For which of you, intending to build a tower, sitteth not down first, and counteth the cost, whether he have sufficient to finish it? Lest haply, after he hath laid the foundation, and is not able to finish it, all that behold it begin to mock him, Saying, This man began to build, and was not able to finish." (Luke 14:28-30)
"And why call ye me, Lord, Lord, and do not the things which I say?" (Luke 6:46)