07/06/2014
Studies show that half of happiness is determined by genetics, and a little under 40 percent is governed by the impact of external events.
You own the 12 percent of the package that's left, however, and it turns out that the choices you make within that sliver make all the difference between being happy or not.
Science shows that you can have an impact on only 12 percent of the things that determine whether you're happy or not. The happiest people among us understand that if you you make the right choices, that small sliver is enough.