An optimistic and open-minded life attitude will promote patients’ healing, while a pessimistic life attitude will affect patients’ survival quality and treatment effect. At present, malignant tumor has become a chronic disease like diabetes, hypertension, chronic kidney disease and other similar diseases, which are closely related to people’s life style. There are also many treatment methods, besides the traditional surgery, radiotherapy, chemotherapy, Chinese medicine therapy, there are also the increasingly mature biological therapy, gene therapy. In addition, the rapid development of science and technology has led to the emergence of innovative drugs and technologies. Governments are investing more and more money in cancer prevention and treatment, and more and more experts are actively involved in the prevention and treatment of malignant tumors. In this context, the incidence of lung cancer has decreased in some developed countries such as the United States, and the long-term survival rate of breast cancer has increased year by year. Therefore, the overall prognosis of malignant tumors is expected to be gradually improved, and the role of patients’ mindset in the whole treatment process will become more and more important. At present, there are many reasons for patients’ mental stress, including lack of understanding of disease prognosis, media’s exaggeration, misinterpretation of overall cancer prognosis by the whole society, lack of reasonable comprehensive treatment and lack of appropriate psychological intervention. Therefore, once a patient suffers from cancer, he/she thinks that there is no hope for treatment and even gives up treatment, living in depression and fear. During my study in the UK, I participated in the multidisciplinary consultation team of the University of Liverpool many times. The multidisciplinary consultation of lung cancer in this team consisted of specialists in surgical oncology, internal medicine, radiology, pathology, radiotherapy, immunotherapy, physiotherapy, etc. Sometimes the consultation team leader would notify the nursing-related personnel to participate as needed. The diagnosis of tumor must be determined by multidisciplinary consultation in the UK, thus ensuring correct diagnosis. Patients who have doubts are followed up until they receive effective treatment. Even in more advanced cases, the specialist will inform the patient of the prognosis, such as only one year of survival, and what intervention methods are to be used. The patient would say, “It’s okay, life and death are just a part of the life process, I am going to do something meaningful again in my lifetime, such as traveling to the Mediterranean Sea, attending a senior citizen university course, helping some more needy people (volunteer work), etc. In the end, the doctors were very moved instead. Their optimistic and open-minded attitude towards life infected me and made me reflect on why there is a big difference between the attitude of our patients and Western patients. I concluded that the religious thinking in the West influences the patients’ attitude to life, they are not shy about life and death even in normal times, and in many cities the cemeteries are in the city center or in their own gardens. In contrast, most patients in China are very shy about death, and Chinese cemeteries are often located in distant suburbs away from urban areas to prevent too much darkness from bringing bad luck to themselves, “it is better to die well than to live”, and blindly focus on the prolongation of life while relatively ignoring the quality of life. In addition, modern research has found that various emotions have a significant impact on the immune function of patients. Positive emotions such as optimism, cheerfulness and open-mindedness can improve the immune function of patients, and such patients can actively cooperate with doctors and have better treatment results. Negative emotions such as pessimism, misanthropy and fear will seriously affect the immune function of patients, which is not conducive to the improvement of the treatment effect. I have treated many cases of advanced lung cancer patients, often identified as 3-6 months at most, who have been living for more than 2 years. Coming out and insisting on taking herbs, their optimistic, confident and kind personalities also helped them survive. In a sense would be that they saved themselves. I recently treated a 68-year-old female patient with advanced pancreatic cancer, who was initially judged by the surgery to have a survival period of 3 months, but after comprehensive treatment with Chinese medicine, her survival period has reached 9 months, and the functions of all important organs are in a safe state. However, the patient, who is an internist herself, considers the disease as terminal and always lives in fear and depression, and started to refuse the medication a few days ago, which is a great pity. Here, I hope that patients, family members, doctors and general readers who read this article, please encourage the malignant tumor patients around you, so that they can gather courage to overcome cancer together with doctors!