About seven years ago I was at a turning point in my life. I had been home from my mission for several months and I had no indication I'd be returning any time soon. Depending on the day, my self-confidence was shaky, to put it lightly.
My roommate decided to go for a run and on a whim I joined him. Running up 9th East in Provo was a bit difficult. Nevermind that I hadn't run in months, but I don't know if I had ever run so uphill. So somewhere around Wymount Terrace I was feeling out of breath.
I slowed my run to a walk and struggled to go any faster. Tired. Cramping. I felt done for the day.
My roommate turned around and shouted encouragement to keep going. I remember only once sentence of it. "You can do more than you think."
I've worked hard enough and met enough people now that I know better than to think I'm alone; I'm not the only one with low self-esteem or disabling beliefs: "I don't matter", "I'm not enough", "I'm no one". Everyone has limitations. Everyone has beliefs that hold them back. Dismissing them is easier said than done though.
In my experience it takes someone more powerful than me to get rid of those debilitating beliefs. This brings to mind a song by one of my favorite Christian artists (I have several, so the favorite favorite changes based on the day):
I'm more than you dreamed
More than you understand
Your days and your times
Were destined for our dance
I catch all your tears
Burn your name on my heart
Be still and trust my plan
I'm more than you think I am
Don't downplay the Grace of Jesus Christ. As Elder Hafen said, "The Savior's atonement is thus portrayed as the healing power not only for sin, but also for carelessness, inadequacy, and all mortal bitterness. The Atonement is not just for sinners."