Do you ever feel this way: the hardest times of the day are often not when you encounter difficulties at work, but the instant you open your eyes and the moment you close them to prepare for sleep? Morning feels like a heavy blow, while night feels like a bottomless pit. This isn't because you're weak, but because these two periods are the most sensitive "switching periods" for the nervous system. Let's start with morning. The moment you open your eyes, your body naturally releases cortisol to wake you up. But in a state of anxiety, this natural arousal response is amplified into a "battle signal." Your brain jumps from a shutdown state to full capacity within seconds, dumping all the things you need to worry about that day—unread messages, to-do tasks, unknown anxieties—onto you. You're already mentally exhausted before you even get out of bed. This is why many people have "morning grumpiness" or prefer to stay in bed; it's actually an instinctive resistance to entering the "battlefield." Now let's look at night. During the day, we have work, phones, and social media to distract ourselves, like we're constantly running. But when the lights go out at night, the world quiets down, and the brain loses its external grip, it begins to "ruminate." The emotions suppressed during the day, unresolved conversations, and fears about the future all surface at this time. The more you try to sleep, the more awake your mind becomes, as if you're in the middle of a never-ending critique. This lesson wants to tell you that the pain during these two moments has a physiological basis, so don't blame yourself. To alleviate this double-edged anxiety, we need to establish a "buffer zone." In the morning, allow yourself to start things off slowly. Don't grab your phone the moment you open your eyes; try taking two deep breaths in bed, telling your body, "No tigers are chasing me today." Even just drinking a glass of warm water sends a "safe" signal to your nervous system. In the evening, establish a "shutdown ritual." Write down your worries on paper, telling your brain, "I've written them down; I'll deal with them tomorrow." If you can't sleep, don't force yourself to sleep, because "trying to sleep" is itself a form of stress. Allow yourself to simply lie down and rest; even without falling asleep, your body is recovering. Remember, sunrise and sunset are natural cycles, and so are your emotional fluctuations. You don't need to control them; you just need to be gentler and more patient with yourself during these two most vulnerable moments.