Human health includes both physical health and mental health, both of which are indispensable. Physiological health is the basis of human survival, without a healthy body, it is like a source of water, no wood, while mental health is an important factor affecting the quality of human survival, a healthy psychology will improve your quality of life, and conversely an unhealthy psychology will not only make your quality of life decline, but also affect your physical health, there are many diseases are due to anger, depression, worry, fear and other unhealthy psychology. Fear and other unhealthy psychology caused by. 1, to constantly improve their knowledge and understanding: pay attention to their own image in the minds of others, to understand the views of others on themselves, you can more objective and comprehensive understanding of themselves, see their strengths and weaknesses, clear direction of future efforts, to develop their strengths, overcome their weaknesses, and continue to make new and greater progress. 2, to develop a positive, stable mood: positive mood, optimistic and cheerful and happy people, mental stability is generally better. On the contrary, negative emotions, easily excited temperamental, sentimental, depressed, angry and pessimistic disappointed people, often prone to psychological imbalance, leading to mental disorders and physical and mental diseases. We all like students who are cheerful, optimistic, confident, kind, caring and helpful. With them, we will be happy, happy, and can learn a lot from them. 3, actively participate in collective activities, take the initiative to interact with people: normal and friendly interaction with classmates and friends can make people eliminate loneliness, from which they can obtain a sense of happiness and security. Individuals have distress, unhappy when looking for good friends to talk about it, get catharsis, so that people have a broad mind, happy mood, conducive to mental health. Harmonious relationships, which are a source of friendship, can make people feel, comfortable, and at the same time, enhance the cohesion of the class collective. If a person is often out of the group, isolated from the collective, closed door, do not interact with others, it is easy to develop a lonely character, over time will certainly affect the mental health. Therefore, we should all actively participate in beneficial class activities and other collective activities, take the initiative to interact and get along well with others. 4, to pay attention to maintain the health of the brain: life should be regular, to have a normal order of life, to go to bed early, regular living, not violent diet, that is, regular rationing, can not see the delicious food to eat a lot of food. In particular, we should pay attention to the combination of mental and physical labor, so as to combine work and rest, avoid overloading the brain, tired of learning to rest for a while, do exercises, activities, beneficial to the health of the brain. 5, to develop the habit of self-praise and encouragement: prepare a pen record, record one thing that you are satisfied with each day and one thing that you are not satisfied with, for comparison. Satisfied with the things they praise themselves, continue to work hard; unsatisfactory things, to find the reasons, the next time to do better.