One of my favorite LDS Primary Songs is Faith by Beatrice Goff Jackson. I find her lyrics so powerful.
The first verse goes like this:
If ye have faith as a grain of mustard seed, ye shall say unto this mountain, Remove hence to yonder place; and it shall remove; and nothing shall be impossible unto you. (Matt 17:20)
That verse is inspiring and humbling at the same time. Do I really believe that my faith could move mountains? Honestly I'm not sure I do, but I am working on it. And the multitude of miracles I've experienced in my life have helped me to see that trusting in my Heavenly Father is leading to a deep and abiding faith in Him.