One must be big enough to admit mistakes, smart enough to profit from them, and strong enough to correct them.

If we say that we have no sin, we are deceiving ourselves, and the truth is not in us. If we confess our sins, He is faithful and righteous to forgive us our sins and to cleanse us from all unrighteousness.
1 John 1:8-9

It's a mistake to love things and use people--one should use things and love people.

So then, while we have opportunity, let us do good to all men, and especially to those who are of the household of the faith.
Galatians 6:10

"Therefore, however you want people to treat you, so treat them, for this is the Law and the Prophets."
Matthew 7:12

  Four difficult words to be spoken: "I made a mistake."

Until mistakes are admitted,
corrections will not be made.

When mistakes are admitted,
corrections can be made.

After mistakes are admitted,
corrections need to be made.