When analyzing others, one should focus on their strengths to recognize their virtues; when examining oneself, one must focus on one's weaknesses to see one's flaws.
What is held in the heart is emotion, and what comes out of the mouth is speech. Speech is the pivot of honor and disgrace, and a major bond of intimacy and distance; it can reconcile differences and unite the disparate, or it can breed resentment and stir up enmity. On a grand scale, it can lead to the downfall of a nation and a family; on a small scale, it can cause the separation of close relatives.
Regret is a form of self-torture. Instead of dwelling on regret, it is better to correct one's mistakes, find a new starting point for oneself, and begin again. In life, two phrases should be kept in mind: "Do not be afraid" and "Do not regret."
People who feel oppressed often speak in a small voice, showing a lack of self-confidence and appearing unhappy. Therefore, one should try to raise their volume, but avoid shouting at others. It is enough to consciously speak slightly louder than usual.
Using others as a mirror first requires the ability to know oneself, achieving self-reflection, introspection, self-respect, and self-encouragement. One can use the strengths and weaknesses of others as a mirror, and the reasons for their gains and losses, successes and failures as a mirror, thereby absorbing more nourishment. A person good at learning can find a mirror for learning everywhere. By using the attitudes of others toward oneself and others as a mirror, one can clearly understand one's own "gains and losses."