"Remember the worth of souls is great in the sight of God" --D&C 18:10
How can we be both infinitely valuable to God, but at the same time be nothing? What did Moses mean when he said the had never supposed that man was nothing? Certainly it has something to do with the false notion put forth by Korihor that:
"every man fared in this life according to the management of the creature; therefore every man prospered according to his genius, and that every man conquered according to his strength; and whatsoever a man did was no crime." (Alma 30:17)
At first ring, this line from Korihor sounds right. We have our agency, we have been put on this earth to use that agency to grow and "manage the creature" inside of us, but the problem with Korihor's philosophy is that it removes God from the picture. We prosper according to our own genius, but where did we get that genius from? We owe everything to God, and are only one small nano-particle in the vast expanse of his creation.
On the other hand, we are created in His image, and we are the crowning of His creations. and his entire work and glory is to
"bring to pass the immortality and eternal life of man."
So, on the one hand we are nothing without God, we owe everything to him and would be lost with out him, but on the other hand we are the object of his greatest affection, and his greatest project. That is encouraging.
I am weak, I struggle, and I fail, but when I rely upon the Lord and trust him, I know that I have an unconquerable force in my corner.
That is really encouraging.