The ancient emotional dimension theory believes that all human emotions are composed of several basic dimensions, which are distinguished according to the different distances in the dimensional space between the similarities and differences between different emotions. In the dimension of valence, from positive to negative, the pleasure degree decreases in turn. On the side of positive valence, those with pleasant feelings are called positive emotions, and those on the side of negative valence without pleasant feelings are called negative emotions. Hassey believes that "Positive emotion is the pleasant feeling when you are happy and want to laugh when things are going well." Having a positive attitude will have many benefits, it will make people cheerful and happy, and the benefits are mainly divided into the following aspects .

Benefit 1: Positive emotions can promote cognition.

Positive emotions provide additional usable information for cognitive processing, adding more cognitive components available for connection; positive emotions expand attention spans, resulting in a more comprehensive cognitive context that increases problem-related The breadth of cognitive elements increases cognitive flexibility and increases the diversity of cognitive connections. In this state, the individual's thinking is more open and flexible, and he can come up with more problem-solving strategies. Many results have found that a broader categorization of positive emotions brings the benefit of a more flexible and creative way of thinking.

Benefit 2: Positive emotions can build personal resources

Positive emotions build an individual's resources, including physical skills, health, knowledge, theory of mind, executive control, friendship, social support networks, resilience, optimism, creativity, and more. These resources include intra-individual resources, such as enhancing psychological and physical resilience, as well as inter-individual resources, such as enhancing social connections. This benefit facilitates active participation in activities and prepares individuals for more favorable conditions for social adaptation. , improve the individual's social adaptability. In addition, it also creates conditions for individuals to strive for a wider range of social resources.

Benefit 3: Positive emotions can improve subjective well-being

Positive emotions expand the mental activity space and the individual's instantaneous thinking activity sequence, and the expansion of the mental activity space increases the individual's receptivity to future meaningful events, which in turn increases the opportunity and possibility of experiencing positive emotions. The advantage is that it not only promotes the response to challenges, but also relieves negative emotions and brings good luck to yourself. Because this emotion brings you a good mentality of initiative and enthusiasm, you will not shrink back when you encounter difficulties, and you will not be proud of your achievements. Live happily and easily every day; such repeated experience increases the individual's psychological resilience, improves the quality of social relationships, and enhances the individual's subjective well-being.

Benefit 4: The expression of positive emotions can promote mental health

There is also research suggesting that all positive emotions share a single emoji, the Duchenne smile—the upturned corners of the mouth with muscle contractions around the eyes. Keltner and Bonanno found that people with a Duchenne smile reported less negativity and stress, and especially less anger, than people who didn't smile when they described their dead companions. The findings of this study suggest that a Duchenne smile reduces pain and enables people to better adjust themselves. Such as the use of positive emotion vocabulary to record milder stress and trauma, such benefits are helpful for individuals to face trauma and stress, making individuals feel more happy atmosphere and less depressed mood.