Man is the most spiritual high-level creature in nature, also known as the spirit of all things. In the animal kingdom, man is the most advanced animal. This is because the human brain is the most developed, only people can think, and are emotional animals.

People are people in society. Human emotions are closely related to society. Society has a decisive influence on a person's psychology, that is, on the state of mind. In society, the human brain produces various mental activities that are closely related to human health. In other words, a person's mental state determines the well-being of the body. The same environment, the same stimulus or pathogenic factors, will produce different results for the human body in different mental states. Optimistic people are not easy to get sick and can live longer. The "Yellow Emperor Neijing Suwen Ancient Theory of Innocence" holds that "there is no trouble with thoughts within, and it is the duty of tranquility and pleasure, and self-sufficiency..." It points out that people must be optimistic and free, which is the primary condition for cultivating the mind.
Lu You, the great patriotic poet of the Southern Song Dynasty, was known for his bold temperament. He is not only unique in art, but also advocates the cultivation of temperament, Lu You's poem "Small City" writes: "Let go of weng chest times speculate, thousands of miles are not wide enough." "It reflects his optimistic and realistic attitude towards life, and also reflects his longing for comfort and ease, so that people feel comfortable and at ease." For all those who crave relief from adversity, this is indeed the "good side" for prevention and healing.
Human character is not innate. Hard life, complex and contradictory worlds often bring joy and sadness to people. The seven passions and six desires are all-encompassing. Those who want to open everything is equal. Therefore, in the past generations of heart maintenance, everyone emphasized the importance of maintaining emotional comfort. The Ancient Theory of Innocence in Suwen says: "Tranquility and nothingness, true qi follows it, spirit is guarded, and illness is always safe." "A cheerful and optimistic attitude is the key to a healthy longevity. As the saying goes, "the prime minister can hold a boat in his belly", it is said that he must have a heart and mind, to have "cloud and water, pine and cypress integrity", "selfless in the heart of the world is wide", "to treat the truth as well", with people and things, do not seek greed and seek troubles; with food and things, do not spend money and water than others, and shine on lights; only willing to be content and happy, and not ashamed of oneself.
Older people often feel underemotional because of their age; younger people complain that others cannot understand them, so they are distressed and psychosomatically mutated. Healthy older people are "martyrs of twilight, but they are still ambitious" and use their residual heat to contribute to society. Although he was very helpless, he still laughed at life: "It is not that he can tolerate disease in his twilight years, but his heart is originally wide." Many long-lived elderly people believe that only by being comfortable and happy, and having a disease-free mind can they live a long and healthy life. "Old chi is slow, disease-free is wide-hearted, red apricots are difficult to forbid from rain, and green pines are resistant to cold." Isn't this a portrayal of a soothing mood and inner peace? The other was born with three treasures – spirit, qi and god. The most important of these three, God is the concentrated expression of spirit and energy. The ancients had an old saying: "God is the car, and gasoline is the horse." ” 。 The relationship between the spirit and god, Yu Cheng vividly mentioned in the "Law of Solid Essence" that "God is like fire, but the essence is still oil." Essence can be understood as the material basis of the human body. This material life activity is summed up as "God", like a lamp. flame.
Mental factors play such an important role in people's life activities, therefore, regulating the spirit and cultivating the mind should be the main aspects of maintaining health. This is especially important for the elderly. Because the elderly have insufficient energy, they are prone to anger. Eyes and ears are unclear and prone to suspicion; they are in a bad situation and often depressed. Therefore, we should pay attention not only to the aspects of daily life, diet, movement, etc. suitable for peace, tranquility and ease, but also to the main points of integrating the state of mind. Ask to eliminate bad emotions here. The Yuan Dynasty's "On Aging" said: "Wash the knots in the chest, do not seek fame and fortune, and do not be arrogant in mood and anger... God does not think evilly. In the "Sayings of Healing the Heart" in the Collection of Youcheng, it is written that "people are more annoyed with me and less remembered, and people are afraid that I am not angry; indifferent and inactive, and self-satisfied, this elixir of immortality." ”
In this way, the way to maintain health is not to find a panacea, but to nurture the mind and adjust the mind, pay attention to mental health, and then high life expectancy.