This means that when a person meditates, he should think more about what he has done wrong, his own thoughts, his own remarks and his own behavior, and through such introspection, he will constantly correct himself, thus improving his moral cultivation and cultural quality.
When talking and chatting with others, don't say others' faults. Talking too much will lead to losses, which is easy to cause disputes and contradictions, and speaking ill of others behind their backs is also a manifestation of their own lack of moral cultivation. Therefore, don't speak ill of others in the process of chatting with them. On the one hand, we should improve our self-cultivation, on the other hand, we should reduce some unnecessary troubles.