How is it possible?

1 Nephi 3

I remember one time I was talking with my friend Lili, when she said something that, to this day, has never left me. She said, "You are not believing He can do what He says He can."

That phrase sunk into my heart, and whenever I feel like I've lost touch with Him, I ponder this. Today it came to my mind once again as I was reading about Laman and Lemuel and how they doubted God. They said, "How is it possible that the Lord will deliver Laban into our hands? Behold, he is a mighty man, and he can command fifty, yea, even he can slay fifty; then why not us?" (vs. 31)

How many times do I say, "How is it possible?"
How often do I doubt the power of God and what He can make happen in my life?
I've struggled with this for quite some time, and I really want to try hard to believe.

To believe lots of things...
Tithing. Marriage for me. Children. Goals. Confidence in myself. Trust in Him. My testimony.

I love the reference I had written next to vs. 31..
Heb 10:31-32, 35-36

"It is a fearful thing to fall into the hands of the living God. But call to remembrance the former days, in which, after ye were illuminated, ye endured a great fight of afflictions...Cast not away therefore your confidence, which hath great recompense of reward. For ye have need of patience, that, after ye have done the will of God, ye might receive the promise."

And then this reference from Elder Holland:

"Don’t give up when the pressure mounts. Certainly don’t give in to that being who is bent on the destruction of your happiness. Face your doubts. Master your fears. 'Cast not away therefore your confidence.' Stay the course and see the beauty of life unfold for you."

(Jeffrey R. Holland, "“Cast Not Away Therefore Your Confidence”", Ensign, Mar. 2000, 7)