"So David waxed greater and greater: for the LORD of hosts was with him" (1 Chronicles 11:9)
Now, I know that I go on and on about King David, but look! here is the key, the reason, the explanation to his success: he didn't begin great.
I mean, from what we have David was a good boy, maybe even exceptional for his age and time, but not great. No, great came later. And greater came later still. To me, this means hope for myself. I'm not great, but through the Lord apparently I can wax greater and greater. I mean, even when David had committed his great sin and was seeking forgiveness, he had the spirit of prophecy and music (see Psalms). That's how great he was. And we can be that great too.
This verse about David is echoed about Christ: "the child grew, and waxed strong in spirit, filled with wisdom," (Luke 2:40); "saw that he received not of the fulness at the first, but received grace for grace" (D&C 93:12).
Mortality is a growing experience, for everyone. If we are not where we want to be, then like David, we have to do it through the Lord. In fact, I don't know if anyone great has done it another way. And, if we are amazing already, God can always make us greater.
