Cancer patients often worry about whether their disease can be cured, whether they can work or go to school after treatment. Some people mistakenly believe that “cancer is incurable”, therefore, despite proper treatment, they are still very nervous, fearful and emotionally negative, causing poor sleep, loss of appetite and disinterest in everything. For these situations, we should do a good job of explaining. Due to medical research and medical practice at home and abroad in recent decades, many cancer patients, especially those in the early and middle stages, are potentially curable. The treatment of cancer in China, often using integrated treatment and combined Chinese and Western medicine, has greatly improved the efficacy than in the past. Even for advanced cancer, with reasonable treatment, it is possible to reduce pain and prolong life expectancy. Therefore, it is necessary to build up the confidence to overcome cancer, to change the mental state from negative to positive, to cooperate with medical personnel, to mobilize the body’s anti-disease ability (immunity), and to fight against cancer. After cured, cancer patients can continue to work and study. Anger, sadness, anxiety, etc. can cause the decrease of immunity, which is not good for the cure. There are some patients who can treat the disease correctly, cooperate with physicians for treatment, have stable emotions and stronger will to fight with the disease, and often have much better treatment effect than those patients who are overwhelmed by cancer. If they are mentally destroyed across and cannot pull themselves together, it is difficult for the best treatment to fully show its curative effect. Emotions can contribute to the aggravation of the disease as well as to its improvement. Here it is advisable to advise the patient to make a plan to cure or recuperate from the illness. The plan should be based on the condition and physical strength. The plan can also be revised as the condition changes. The plan should include time for rest, treatment, walking and exercise. Some people may plan to read, paint, or listen to music; others may plan to play chess, talk, or write; others may plan to do some work, chores, or study. Doing so can make your daily life very full and your days meaningful. It can also be recommended that some patients plan or think about their future life goals, including one or two major events. Some people want to build a house, some want to plant a tree, some want to write a book or article, some want to organize major family events, some want to learn to drive a car, and so on. These reflections will make people love life and maintain normal relationships with people around them. Remember, a good mental state is the best medicine against cancer!