Jesus can be very straightforward and direct.
His suggestion on criticizing is to not do it. Period. End of story. No other advice. In other places He elaborates why but the reason here is pretty compelling.
I must admit, this is a tough one. It is way too easy to be critical. At work, as managers, we are required to do it. At home, as parents, we feel an obligation to do it. But Jesus is clear. It is a “critical spirit” that is the problem. God’s goal for us that we leave the judging up to Him. It is simply not our job to do that.
Do I want to be judged? Do I want to be criticized? If I don’t judge, I won’t be judged.
Judge not, that you be not judged. ~~Jesus Matthew 7:1
Here is how it goes in The Message version of the Bible.
Don’t pick on people, jump on their failures, criticize their faults— unless, of course, you want the same treatment. That critical spirit has a way of boomeranging. It’s easy to see a smudge on your neighbor’s face and be oblivious to the ugly sneer on your own. Do you have the nerve to say, ‘Let me wash your face for you,’ when your own face is distorted by contempt? It’s this whole traveling road-show mentality all over again, playing a holier-than-thou part instead of just living your part. Wipe that ugly sneer off your own face, and you might be fit to offer a washcloth to your neighbor.