The book believes that happiness, expressed in economics, is to maximize the utility of the allocation of life resources (time and energy) and to achieve the optimization of life experience. 'Internal seeking' and 'External seeking' are mainly based on the thinking of the individual's controllable level. Happiness sometimes exceeds the individual's controllable level. This level is concentrated in the public environment of the individual's country, including international politics, conomic status, peace situation, social security, culture, education, social security, environmental protection, etc. said Ni Zhiliang.

Compared with Happiness Economics (2017 edition), The Way of Happiness-Happiness Economics Practical Edition pays more attention to practicality, and the number of cases has increased from more than 170 to more than 290. Among them, more than 70% of the cases in the first and second chapters have been optimized in terms of content selection and case reviews, and all the contents of the third chapter have been updated, adding two chapters, Education and Happiness and Culture and Happiness.