In all one's lifetime it is oneself that one spends the most time being with or dealing with. But it is precisely oneself that one has the least understanding of. When you are going upwards in life you tend to overestimate yourself. When you are going downhill you tend to underestimate yourself. It's likely that you think it wise for yourself to know your place and stay aloof from worldly wearing a mask of cowardice , behind which the flow of sap in your life will be retarded. 人生在世，和自己相处最多，打交道最多，但是人最不了解的也恰恰是自己。当你一帆风顺时，往往高估自己；不得志时，又往往低估自己。你可能认为安分守己、与世无争是明智之举，而实际上往往被怯懦的面具窒息了自己鲜活的生命。
To get a thorough understanding of oneself is to gain a correct view of oneself and be a sober realist—aware of both one's strength and shortage. You may look forward hopefully to the future but be sure not to expect too much, for ideals can never be fully realized. You may be courageous to meet challenges but it should be clear to you where to direct your efforts. To get a thorough understanding of oneself needs self-appreciation . Whether you like yourself to a towering tree or a blade of grass, whether you think you are a high mountain or a small stone, you represent a state of nature that has its own reason of existence. If you earnestly admire yourself you'll have a real sense of self-appreciation, which will give you confidence. As soon as you gain full confidence in yourself you'll be enabled to fight and overcome any adversity.
To get a thorough understanding of oneself also requires doing oneself a favor when it's needed. In time of anger, do yourself a favor by giving vent to it in a quiet place so that you won't be hurt by its flames; in time of sadness, do yourself a favor by sharing it with your friends so as to change a gloomy mood into a cheerful one; in time of tiredness, do yourself a favor by getting a good sleep or taking some tonic. Show yourself loving concern about your health and daily life. Unless you know perfectly well when and how to do yourself a favor, you won't be confident and ready enough to resist the attack of illness.