You may be judgmental, and have been trying to change your behavior for a long time, unsuccessfully.
This, trying the change, is a part of a long string of things you are or have been failing at.
The REAL REASON is buried below several layers of justifications, and without getting to the base layer, the foundation of it, you will never be able to change the behavior.
You may be able to change what comes out of your mouth, but not what you think. Inside you still judge, and then pretend the opposite.