The episodic nature of low mood, depression has a tendency to recur. While depressed moods vary with things, depressed people have a distinct temporality – heavy daytime and light nighttime. Even if you are so troubled during the day that you want to kill yourself, you can be in a lighter mood at night, but the pain comes back early the next morning. Let yourself be in a place with plenty of light: Studies show that being bathed in sunlight or artificial light can help people lift their depression, especially in the winter and spring. Experts have found that some particularly light indoor fixtures can also be helpful in reducing depression. Depression happens all around us, and depression is a part of our modern, fast-paced society. There is a fundamental difference between depression and low mood: In a competitive society, life is stressful and people have to live with inevitable setbacks and failures. Depression is a normal emotional phenomenon, not necessarily depression, when you encounter unhappy things. Depressed mood is different from depression in the following ways: 1. There are obvious objective reasons for depressed mood, while depression may occur without any reason or because of a little trivial matter, lack of objective stimuli that can explain the depression. 2.Low mood is only for a period of time, usually no more than 1 month, if you are in a depression for a long time, unable to get rid of the pain for months or even more than 1 year, you should suspect whether you are suffering from depression. 3, the degree of depressed people is light, only psychologically unpleasant, does not affect the normal physiological and social functions of people, but depression will reduce the function of the human immune system, affecting the normal life, learning and work of patients, patients will close themselves in a small space, unable to integrate into the normal social life. 4, severe depression patients will have the idea of self-abandonment, or even suicide.