english: It certainly seems that we're going about our lives, that what we're doing, who we're with, what we're thinking about, have a big influence on our happiness, and yet these are the very factors that have been very difficult, in fact almost impossible, for scientists to study.
non_english: Звісно, ми - режисери своєї долі, а наші справи, оточення, думки глибоко впливають на почуття щастя, проте саме цих факторів учені не змогли дослідити.