Being in a good state of mind does not usually cure cancer. Being in a good state of mind is helpful in treating cancer, which can slow down the development of the disease and prevent the symptoms from becoming more serious in the later stages. If there is too much emotional fluctuation, anxiety and tension after cancer, it may lead to the rapid development of cancer and shorten the survival time of the patient. Therefore, it is necessary to keep a good mindset and pay more attention to rest after cancer, which is helpful for the treatment of the disease to a certain extent. Although a good state of mind can promote physical recovery, it cannot cure cancer. Cancer treatment still needs drug treatment or surgery, for example, after the appearance of early cancer, it is best to carry out early surgical treatment in time to remove the lesions, so as not to cause the cancer cells to spread and metastasize. At the same time, adjuvant treatment, such as radiotherapy or targeted drug therapy, can also be carried out.