I can prove it: happiness is a photo book. In Emotional Equations: Simple Truths for Creating Happiness + Success, Chip Conley identifies equations that provide insight into our emotions. One equation that Chip presents describes happiness:
This equation leads to the obvious question: how do we ensure that we want what we have? Specifically, we need to appreciate what we have, and the way to do that is through taking photos and writing about our experiences. Only by documenting and remembering our life can we appreciate it. And what better way is there to document our life than by creating photo books that highlight the people and experiences that are most important to us? There you have it – happiness is a photo book.