Without realizing it, we find ourselves surrounded by people who suffer from depression, which may include our loved ones, friends or even ourselves. Depression, like other illnesses, does not appear for no reason, there is always some specific reason for it. The problem of depression has seriously disturbed our normal life to the point that it has to be solved. To solve depression, we need to go back to the source and understand what the nature of depression is. 1. The physiological nature of depression is related to the imbalance of neurotransmitters in the brain, and the decrease in the concentration of neurotransmitters [including 5-hydroxytryptamine (5-HT), norepinephrine (NE) and dopamine (DA)] in the brain can lead to depression. But this is only the monoamine hypothesis of depression, its real cause, or in the process of continuous exploration; 2, the psychological nature of depression, is too much thinking, liver depression and qi stagnation, liver qi stagnation caused. In simple terms, it is a long time in the bad mood, and do not know how to relieve their bad mood, in the body of the long-term accumulation of bad emotions, it is easy to produce depression. From the essence of depression, depression is not terrible, it is a treatable disease, and can be started from two aspects: one is to physically condition the brain to try to balance the neurotransmitter levels; the other is the need to adjust the mindset, stabilize the mood, so that it can return to normal.