Happiness is a virtue, not its reward.
— Baruch Spinoza, Age of Enlightenment philosopher (1665; Public Domain)
We have the script completely backwards. We believe that if we achieve certain things, we will be happy; in reality, happiness is the spiritual attribute which propels us to achieve. Our happiness leads to our success, not the other way around! Consciously work every day to develop and hone the virtue of personal happiness.