Have you ever been having a bad day, and one person said something that made you smile, or lifted your spirits? I have on countless occasions. It is amazing how many of those times I forget to let the person know of their influence on me. I have been inspired by complete strangers, who would never know it. I am sure many of you have had similar experiences.
Now think about the fact that you have done that for other people. I agree that we "underestimate [our] profound capacity for blessing the lives of others." I am starting to understand how much power I actually have for good. I know that the Lord has worked through me to touch the lives of others when I didn't even know it, and I know that he has work through you as well. So next time you are tempted to doubt yourself, remember the truth about you. You make a significant contribution to this world. Believe it because our Heavenly Father believes it.