When we fall into a depressed mood, we can quickly recover through music, sleep, travel, while depressed people can not, their resistance to defeat is approximately equal to 0. When depression comes to the door, they can only let the negative emotions manipulate, step by step into the abyss. According to the WTO survey, about 800,000 people die by suicide every year, equivalent to one person every 40 seconds to actively end their lives. Depression is the main culprit of most of the suicides.