"Corrected mistakes make a good lesson for the future, uncorrected mistakes Don't."
I don't like the message. The emphasis is on correcting the mistake (not always possible), not learning from it.
The great thing about most mistakes is that they CAN'T be corrected. That is why a mistake is such a great learning tool. If a mistake could easily be corrected there wouldn't be a lesson learned to help us in the future. We learn from making mistakes, not so much by correcting them.
For example, if I wash a wool sweater in hot water and it shrinks, I can't un-shrink the sweater but I will remember to never again wash a wool sweater in hot water. I can't correct my mistake but I can learn from it.
Mistakes are important for learning and growing. LDS Inc. likes to condemn and punish. They emphasize correcting, not learning. LDS Inc. is not a kind and loving church.