What is attention? Attention is the mental process by which an individual’s mental activity is focused on a certain object. It can be divided into active attention and passive attention. Normal human attention is characterized by concentration, stability, and shifting. This process is a process of energy concentration and energy expenditure. The more focused attention is, the more energy is required and the more energy is consumed. If we do not have the ability to exert attention, then the sheer volume of information present in our sensory experience at any one moment can bring us to the brink of collapse. This is because we do not have enough energy to accomplish focused attention on multiple objects, at least not continuously. We don’t have such a huge amount of energy, we have to pay selective attention. So what is selective attention? Selective attention is the ability of an individual to autonomously focus on one part of an experience while “ignoring” the rest of the experience. This is our normal mental process. We as individuals are able to provide the energy needed to pay attention according to physiological processes, but still not in excess. The duration of attention is relatively limited. It must be done within a physiological function. The factors that determine which stimuli enter the individual’s range of awareness are complex and include the intensity of the sensory stimulus, the novelty of the stimulus. The individual’s tendency to respond. The individual’s motivation to focus in the current context, the individual’s state of mind, and the type and extent of other sensory stimuli that coexist in the environment, etc. What are the mechanisms of attention? It is now believed that attention is definitely related to the brain, where it is associated with the activation of the anterior cingulate cortex and the frontal cortex. There are three attention subsystems in the brain, the first of which is the executive attention subsystem, whose function is defined as monitoring conflict; the second attention subsystem is the orienting subsystem, whose function is to orient the individual in space; and the third attention subsystem is called the vigilance subsystem. It will orient the individual in the temporal dimension. The most important point is that the mechanism of attention is not single, but consists of multiple, mutually interacting conscious and subconscious processes. Attention is an energy-focused process that must correspond to a physiological state. Individuals are limited in the amount of time they can focus their attention. Effectively working more efficiently and accomplishing our goals in a limited amount of time allows us to have enough time for rest, activity and contributes to mental and physical health. What we experience during our growth cannot be put down, we will form an attention point, if more attention points are formed, it will become multi-point attention; or in a certain period of time, there are multiple events occurring, individuals need to pay attention to them all, they will also form multi-point attention, which will cause individuals to have low energy and inattentiveness. Some individuals will gradually develop emotional problems such as insomnia, anxiety and depression. Therefore, we need to reduce our thoughts and focus our attention.