Usually when people encounter something disagreeable to them they don’t open up to it. Such as when people are criticized: “Don’t bother me! Why blame me?” This is someone who’s closed himself off. Right there is the place to practice.
When people criticize us we should listen. Are they speaking the truth? We should be open and consider what they say. Maybe there is a point to what they say, perhaps there is something blame-worthy within us. They may be right and yet we immediately take offense. If people point out our faults we should strive to be rid of them and improve ourselves. This is how intelligent people will practice.
– Ajahn Chah