You can't be too happy, literally

Exploring the consistent levels of reported happiness among Americans over 70 years despite significant historical events and societal progress. Delving into the idea of psychological immune system and homeostatic mood to explain emotional balance. Comparing mind control systems to thermostats for regulating emotions. Discussing the delicate balance of emotions to prevent extreme states like mania and depression. Exploring how neurotics and depressives handle sadness and success differently. Delving into the relationship between sugar consumption and emotional experiences.