In the Lectures on Faith, Joseph Smith said that faith is mental exertion, not physical force. We have all done our part at lifting ourselves out of something, but ultimately it is the Lord who lifts us. And we have to be willing because God won’t yank us out of our problems or circumstances against our own will or desires. That’s a wonderful thing about what Nephi says here. He talks about God being with him, about the wonderful gifts he has received from God. Why should my heart weep and my soul linger in the valley of sorrow and my flesh waste away and my strength slacken because of mine afflictions? Why should I yield to sin? And why should I give way to temptations? Why? Why? Why? And why am I angry because of my enemy? Awake my soul! Come on!
Much more, I will praise the Lord forever and I will rejoice in the rock of my salvation. There is great power in that moment when one yields to the welcoming enticings of the Lord and of the Spirit.