Here’s an important truth to always keep at the back of our heads: Our personal circumstances have a minimal impact on our happiness — much less than we think they do. If we average out the research data from different studies, we’ll come to the conclusion that our individual circumstances account for only 10 percent of the variations in people’s levels of happiness. Hence, it’s best for us to not assume that any positive change in our circumstances would bring us tons of happiness in the long run. It just won’t!