Let me be direct and clear. The answers to the questions “Am I good enough?” and “Will I make it?” are “Yes! You are going to be good enough” and “Yes, you are going to make it as long as you keep repenting and do not rationalize or rebel.” The God of heaven is not a heartless referee looking for any excuse to throw us out of the game. He is our perfectly loving Father, who yearns more than anything else to have all of His children come back home and live with Him as families forever. He truly gave His Only Begotten Son that we might not perish but have everlasting life! Please believe, and please take hope and comfort from, this eternal truth. Our Heavenly Father intends for us to make it! That is His work and His glory.
Elder J. Devn Cornish, "Am I Good Enough? Will I Make It?", General Conference, October 2016
Sometimes we impose limits on ourselves. The fact that we tell ourselves that we can't do something, or that we aren't good enough, is NOT putting our trust in our Savior. We may not be putting ourselves down by any means, but our realistic nature keeps us limited. Why can't we do the impossible? Why can't we say to that mountain, "move", only to watch it move?
The Savior is saddened when we say or think that way, when we put limits on ourselves. He not only reached down to our level to understand and have empathy for what we go through, but He descended below our level and all things.
With His infinite Atonement, He accomplished two things. One, so that we may be forgiven of our stupidness and errors, even our sins, if we repent and try to change daily. But, two, He also gave us the gift of enabling power, that enables to rise to ANY level that our trust and faith will take us. The more faith we have, the more we can do the seemingly impossible. In fact, our finite minds don't even know exactly what's impossible.
But our finite selves put a limit on the infinite power and capability of the Atonement, for one reason or another. Satan whispers to us constantly that we need limits. So, tell him to shut up and then go and rise above.
For years I have been using a motto. It reminds me to keep pushing, to keep battling. It says (in latin), "Per Ardua Surgo". Which translates to... Through Difficulty (or Adversity), I rise!