<p>The interrelated ideas of balance, harmony, and low arousal positive states (e.g., calmness) have been relatively neglected in wellbeing scholarship, notwithstanding prominent notions like work-life balance. One explanation is the Western-centric bias of such scholarship, with these constructs arguably having historically been less prioritized in the West compared to elsewhere. There is now an emergent literature exploring these topics however, referred to here as “harmonic principles of wellbeing.” This paper presents the most comprehensive study to date of these principles, exploring an eight-item module on these concepts in the 2022 Gallup World Poll, covering 143,502 people in 142 countries. We report on two studies examining the internal structure of the module. Study 1 assesses the internal structure in a Western sample (United States, <i>N</i> = 1,006) to identify structural validity issues pertaining to using ideas historically emphasized in Eastern cultures in a modern Western context. Study 2 further examines discriminant validity among the harmonic dimensions of wellbeing using data from all countries. These studies provide evidence of differentiation among these dimensions, but such differences may not necessarily be endorsed cross-nationally in comparable ways. The paper provides a foundation for future work to further elucidate the nature and importance of these vital yet elusive concepts.</p>