Elder Marvin J. Ashton, who served in the Quorum of the Twelve Apostles of The Church of Jesus Christ of Latter-day Saints from 1971 - 1994, had a sign on his office door that read "Come in without knocking and leave the same way."
An interesting play on words. Elder Ashton explained that, according to the dictionary, the word "knock" has two meanings: "to strike something with a sharp blow" and "to find fault with harsh and often petty criticism." The sign provided a reminder for visitors to enter the office without finding fault and to leave the same way.
What great advice. I wish I would practice it more often, to leave whatever criticisms I might have outside and not bring them inside with me.
Joy for today: coming in without knocking and leaving the same way.